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NCS 8th Grade Math Review

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  • Does 15, 20 and 25 represent the side lengths of a right triangle?
    Yes
  • What is the value of x?
    12
  • Tom plans to visit an amusement park where he must pay for admission and purchase tickets to go on the rides. He wrote the equation c = 1.50x + 12 to predict c, the cost of the amusement park. What does the 12 represent?
    The Cost of Admission
  • TRUE OR FALSE: Rectangle R undergoes a dilation with scale factor 0.5 and then a reflection over the y- axis. The resulting image is Rectangle S. Rectangle R and S are congruent and similar.
    False
  • How many solution(s) does the equation 5 - 2x = -2(x + 3) have?
    No Solution
  • Is the graph representing linear or non-linear association?
    Non-Linear
  • On a coordinate plane, vertex A for triangle ABC is located at (6,4). Triangle ABC is dilated by a scale factor of 0.5 with the center of dilation at the origin. The resulting image is triangle A'B'C'. What are the coordinates of vertex A'?
    (3, 2)
  • A set of ordered pairs is shown as {(-3,3), (1,1), (4,2), (-1,-1), (-2,-1), (3,1), (-2,3)}. Which ordered pair should be removed to make the set a function?
    (-2, -1) OR (-2,3)
  • A triangle with vertices at A(−1, 1), B(−2, 1), and C(−1, 4) is translated. The image of vertex A has coordinates at (3, −1). Determine the coordinates of the image of vertex C.
    (3, 2)
  • Is the table representing a LINEAR or NON-LINEAR function?
    Non-linear
  • What is the length of the hypotenuse of the triangle shown below? Round to the nearest tenth.
    7.8
  • What angles are alternate interior angles?
    3 and 7 OR 2 and 6
  • What is the size of angle F?
    150 degrees
  • Simplify the expression.
    r^7
  • What is the approximate volume, in cubic centimeters, of the cone?
    415
  • What are the first 6 digits of pi?
    3.14159
  • A rectangular prism has dimensions of 4cm, 5cm and 7cm. What is the volume of the rectangular prism?
    140 cm
  • On a coordinate plane, the graph of a line passes through the origin and the point (10,14). What is the equation of the line?
    y = 7/5 x OR y = 7x/5
  • What is the size of angle x?
    88 degrees
  • Describe a transformation that maps figure 1 to figure 2.
    Reflection over the y-axis
  • What is the angle relationship between angle 5 and angle 7?
    Corresponding Angles
  • What is the solution to the equation shown to 2(x + 3) = 7x − 4
    x = 2
  • What does the point (6, 23) mean in this context?
    6 weeks of training resulted in a running time of 23 minutes.
  • What type of association is represented?
    Positive Association
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