AASA 8th Grade Math 3

Question 1

What is the equation of a line with slope 3 and y-intercept −2?

Accepted Answer

y = 3x − 2

Answer

Using slope-intercept form y = mx + b: y = 3x − 2.

Question 2

Which of the following best describes a proportional relationship?

Accepted Answer

y = 3x

Answer

y = 3x passes through the origin and has a constant ratio, indicating a proportional relationship.

Question 3

If a right triangle has legs of 6 and 8, what is the length of the hypotenuse?

Accepted Answer

10

Answer

c = √(6² + 8²) = √(36 + 64) = √100 = 10.

Question 4

A scatter plot shows a positive correlation. What does this mean?

Accepted Answer

As x increases, y increases

Answer

A positive correlation means that as the x-values increase, the y-values also tend to increase.

Question 5

What is the surface area of a cube with side length 4 cm?

Accepted Answer

96 sq cm

Answer

Surface area of a cube = 6 × side² = 6 × 16 = 96 square centimeters.

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