Grade 8 Mathematics—Sample Questions

Kerry walks 3 miles each day. How far will she walk in 7 days?

• 10 miles

• 14 miles

• 21 miles

• 24 miles

What number is represented by point P on the number line below?

What fraction of the circle is shaded? Only 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, ., -, and / are allowed in your answer. Answers that are mixed numbers must be entered as an improper fraction or decimal.

• 3/4

• 1/2

• 2/3

• 1/4

What is the equation of the line graphed below?

• y = (2/3)x - 2

• y = (2/3)x + 3

• y = (3/2)x - 2

• y = (3/2)x + 3

Which graph has a slope that is 1/4 unit greater than the slope of the graph of y = x - 2?

• Graph A

• Graph B

Which best describes the association between the time Susan ate dinner and the number of calories she consumed?

• positive

• negative

• irrational

• almost none

Which choice is an irrational number?

• 4π/π

• √18

• 21.989

In which choice is y a nonlinear function of x?

• y = x/4 + 5

• y = 10 + x

• y = (x + 3)/4 - 2x

• y = 2/(x + 3) - 5

Mr. Jones determined that the equation y = 98 - (16/5)x could be used to predict his students’ unit test scores, based on the number of days, x, a student was absent during the unit. What is the meaning of the y-intercept of the function?

• A student who was not absent during the unit should score about 98.

• A student who was not absent during the unit should score about 94.5.

• A student’s test score should increase by about 3.2 points for each day the student is absent.

• A student’s test score should decrease by about 3.2 points for each day the student is absent.

Which is the graph of the linear equation y = -x?

• A. [Graph A]

• B. [Graph B]