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Grade 8 Math Test Flashcards

6 cards from real AzM2 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Grade 8 Math Test flashcards as text

  1. Solve for x: 2x/3 + 5 = 11

    Answer: x = 9

    Subtract 5: 2x/3 = 6. Multiply both sides by 3: 2x = 18. Divide by 2: x = 9.

  2. Which of the following represents a proportional relationship?

    Answer: y = 4x

    A proportional relationship has the form y = kx (passes through the origin with no added constant). y = 4x is the only linear equation through the origin.

  3. The Pythagorean theorem states that a² + b² = c² for a right triangle. If a = 6 and c = 10, what is b?

    Answer: 8

    6² + b² = 10²; 36 + b² = 100; b² = 64; b = 8.

  4. A bag contains 4 red marbles, 3 blue marbles, and 5 green marbles. If one marble is drawn at random, what is the probability of drawing a blue marble?

    Answer: 1/4

    Total marbles = 4 + 3 + 5 = 12. P(blue) = 3/12 = 1/4.

  5. Simplify: √(48)

    Answer: 4√3

    Factor 48 = 16 × 3. √(16 × 3) = √16 × √3 = 4√3.

  6. A linear function has a slope of -2 and passes through the point (1, 4). What is the equation of this line in slope-intercept form?

    Answer: y = -2x + 6

    Using y = mx + b: 4 = -2(1) + b; 4 = -2 + b; b = 6. Equation: y = -2x + 6.

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