[
  {
    "Question": "What is the slope of the line represented by the equation y = 3x + 4?",
    "Answer": "A",
    "Explanation": "The slope-intercept form of a line is y = mx + b, where m is the slope. Here, m = 3.",
    "PictureURL": "",
    "OptionA": "3",
    "OptionB": "4",
    "OptionC": "1",
    "OptionD": "0",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Identifying Slope",
    "Item": 1,
    "Type": "multiple choice",
    "Path": "linear-functions/slope"
  },
  {
    "Question": "What is the y-intercept of the line y = -2x + 5?",
    "Answer": "B",
    "Explanation": "In the equation y = mx + b, b represents the y-intercept. Here, b = 5.",
    "PictureURL": "",
    "OptionA": "-2",
    "OptionB": "5",
    "OptionC": "0",
    "OptionD": "-5",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Identifying Y-Intercept",
    "Item": 2,
    "Type": "multiple choice",
    "Path": "linear-functions/y-intercept"
  },
  {
    "Question": "Which of the following equations represents a line with a slope of 4?",
    "Answer": "C",
    "Explanation": "The slope is the coefficient of x in the equation y = mx + b. Only y = 4x + 1 has a slope of 4.",
    "PictureURL": "",
    "OptionA": "y = 2x + 3",
    "OptionB": "y = -4x + 5",
    "OptionC": "y = 4x + 1",
    "OptionD": "y = x + 4",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Writing Equations",
    "Item": 3,
    "Type": "multiple choice",
    "Path": "linear-functions/equations"
  },
  {
    "Question": "If a line passes through the points (1, 2) and (3, 6), what is its slope?",
    "Answer": "B",
    "Explanation": "Slope is calculated as (y2 - y1) / (x2 - x1). Here, (6 - 2) / (3 - 1) = 4 / 2 = 2.",
    "PictureURL": "https://upload.wikimedia.org/wikipedia/commons/7/7e/Linear_function_graph.svg",
    "OptionA": "1",
    "OptionB": "2",
    "OptionC": "3",
    "OptionD": "4",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Calculating Slope",
    "Item": 4,
    "Type": "multiple choice",
    "Path": "linear-functions/slope-calculation"
  },
  {
    "Question": "What is the equation of a line with a slope of -3 and a y-intercept of 7?",
    "Answer": "A",
    "Explanation": "Using y = mx + b, where m is the slope and b is the y-intercept, the equation is y = -3x + 7.",
    "PictureURL": "",
    "OptionA": "y = -3x + 7",
    "OptionB": "y = 3x - 7",
    "OptionC": "y = -7x + 3",
    "OptionD": "y = 7x - 3",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Writing Equations from Slope and Intercept",
    "Item": 5,
    "Type": "multiple choice",
    "Path": "linear-functions/equation-writing"
  },
  {
    "Question": "Which point lies on the line y = 2x + 3?",
    "Answer": "C",
    "Explanation": "Substitute x = 1 into y = 2x + 3 to get y = 5. Thus, the point (1, 5) lies on the line.",
    "PictureURL": "",
    "OptionA": "(0, 3)",
    "OptionB": "(2, 7)",
    "OptionC": "(1, 5)",
    "OptionD": "(3, 6)",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Identifying Points on a Line",
    "Item": 6,
    "Type": "multiple choice",
    "Path": "linear-functions/points-on-line"
  },
  {
    "Question": "What is the x-intercept of the line 2x - 3y = 6?",
    "Answer": "A",
    "Explanation": "Set y = 0 and solve for x: 2x = 6, so x = 3. The x-intercept is (3, 0).",
    "PictureURL": "",
    "OptionA": "3",
    "OptionB": "2",
    "OptionC": "0",
    "OptionD": "-3",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Finding X-Intercept",
    "Item": 7,
    "Type": "multiple choice",
    "Path": "linear-functions/x-intercept"
  },
  {
    "Question": "Which of the following lines is parallel to y = 5x - 2?",
    "Answer": "D",
    "Explanation": "Parallel lines have the same slope. The slope of y = 5x - 2 is 5, so y = 5x + 3 is parallel.",
    "PictureURL": "",
    "OptionA": "y = -5x + 2",
    "OptionB": "y = 2x + 5",
    "OptionC": "y = 3x - 5",
    "OptionD": "y = 5x + 3",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Parallel Lines",
    "Item": 8,
    "Type": "multiple choice",
    "Path": "linear-functions/parallel-lines"
  },
  {
    "Question": "What is the slope of a line perpendicular to y = 1/2x + 4?",
    "Answer": "C",
    "Explanation": "The slope of a line perpendicular to another is the negative reciprocal. The slope is -2.",
    "PictureURL": "",
    "OptionA": "1/2",
    "OptionB": "-1/2",
    "OptionC": "-2",
    "OptionD": "2",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Perpendicular Lines",
    "Item": 9,
    "Type": "multiple choice",
    "Path": "linear-functions/perpendicular-lines"
  },
  {
    "Question": "Which equation represents a horizontal line?",
    "Answer": "B",
    "Explanation": "A horizontal line has a slope of 0 and is in the form y = b. Here, y = 4 is horizontal.",
    "PictureURL": "",
    "OptionA": "x = 4",
    "OptionB": "y = 4",
    "OptionC": "y = 4x",
    "OptionD": "x = 0",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Horizontal Lines",
    "Item": 10,
    "Type": "multiple choice",
    "Path": "linear-functions/horizontal-lines"
  },
  {
    "Question": "What is the slope of the line passing through the points (2, 3) and (4, 7)?",
    "Answer": "A",
    "Explanation": "Slope is (y2 - y1) / (x2 - x1). Here, (7 - 3) / (4 - 2) = 4 / 2 = 2.",
    "PictureURL": "https://upload.wikimedia.org/wikipedia/commons/7/7e/Linear_function_graph.svg",
    "OptionA": "2",
    "OptionB": "1",
    "OptionC": "3",
    "OptionD": "4",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Slope from Points",
    "Item": 11,
    "Type": "multiple choice",
    "Path": "linear-functions/slope-from-points"
  },
  {
    "Question": "Which of the following lines is vertical?",
    "Answer": "A",
    "Explanation": "A vertical line is in the form x = a. Here, x = 5 is vertical.",
    "PictureURL": "",
    "OptionA": "x = 5",
    "OptionB": "y = 5",
    "OptionC": "y = 5x",
    "OptionD": "x = 0",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Vertical Lines",
    "Item": 12,
    "Type": "multiple choice",
    "Path": "linear-functions/vertical-lines"
  },
  {
    "Question": "What is the equation of the line with slope 1/3 passing through the point (3, 2)?",
    "Answer": "C",
    "Explanation": "Using point-slope form y - y1 = m(x - x1), the equation is y - 2 = 1/3(x - 3), which simplifies to y = 1/3x + 1.",
    "PictureURL": "",
    "OptionA": "y = 1/3x + 2",
    "OptionB": "y = 1/3x - 1",
    "OptionC": "y = 1/3x + 1",
    "OptionD": "y = 3x + 2",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Equation from Slope and Point",
    "Item": 13,
    "Type": "multiple choice",
    "Path": "linear-functions/equation-from-point"
  },
  {
    "Question": "If a line has an undefined slope, what type of line is it?",
    "Answer": "B",
    "Explanation": "A line with an undefined slope is vertical.",
    "PictureURL": "",
    "OptionA": "Horizontal",
    "OptionB": "Vertical",
    "OptionC": "Diagonal",
    "OptionD": "None of the above",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Undefined Slope",
    "Item": 14,
    "Type": "multiple choice",
    "Path": "linear-functions/undefined-slope"
  },
  {
    "Question": "What is the y-intercept of the line passing through (0, -3) with a slope of 2?",
    "Answer": "A",
    "Explanation": "The y-intercept is the y-value when x = 0. Here, it is -3.",
    "PictureURL": "",
    "OptionA": "-3",
    "OptionB": "2",
    "OptionC": "0",
    "OptionD": "3",
    "TestName": "Linear Functions",
    "Content Type": "Math",
    "Title": "Y-Intercept from Point",
    "Item": 15,
    "Type": "multiple choice",
    "Path": "linear-functions/y-intercept-from-point"
  }
]