MAP 8th Grade Math 2

Question 1

A rectangle has a length of 3x + 2 and a width of x - 1. Which expression represents its perimeter?

Accepted Answer

8x + 2

Answer

Perimeter = 2(length + width) = 2((3x+2)+(x-1)) = 2(4x+1) = 8x+2.

Question 2

Which of the following is the slope-intercept form of a line passing through (0, 4) with slope -2?

Accepted Answer

y = -2x + 4

Answer

Slope-intercept form is y = mx + b. With slope m = -2 and y-intercept b = 4, the equation is y = -2x + 4.

Question 3

A bag contains 5 red, 3 blue, and 2 green marbles. What is the probability of drawing a blue marble?

Accepted Answer

3/10

Answer

Total marbles = 5 + 3 + 2 = 10. P(blue) = 3/10.

Question 4

What is the value of x in the equation 2(x + 3) = 14?

Accepted Answer

x = 4

Answer

2(x+3) = 14 → x+3 = 7 → x = 4.

Question 5

Which of the following represents a function?

Accepted Answer

{(1,2),(2,3),(3,4)}

Answer

A function requires each input (x-value) to map to exactly one output. {(1,2),(2,3),(3,4)} has unique x-values, so it is a function.

MAP - Measurement of Academic Progress Practice Test