AzM2 Grade 8 Math Test

Question 1

Which of these two figures will the 30 fall between?

Accepted Answer

5 and 6

Answer

Explanation:
52 = 25 and 62 = 36.

25 < 30 < 36

√25 < √30 < √36

5 < √30 < 6

Therefore, √30 falls between 5 and 6.

Question 2

Which of the ordered pairs below corresponds to a function? Choose all that apply.

Accepted Answer

{(7, 5), (3, 5), (1, 5), (-3, 5)}

Answer

Correct answer:
Repeated x-values are not allowed in a function.

Question 3

Choose the appropriate ending(s) for the following sentence: A set of points is a function only if and only if
Instructions: Check all of the boxes that apply.

Accepted Answer

each x is paired with one and only one y

Answer

Correct answer:
The input and x values are the same, as are the output and y values. Each x in a function can only have one y. Both choices (B) and (E) use different words to express this.

Question 4

To answer, use the table below.

In the table, what is the rate of change?

Accepted Answer

3

Answer

Correct answer:
Take a look at (the change in y)/ (change in x). This tells you how fast things are changing.
Take the first two points to compute the rate of change.
Slope = (7-4) / (1-0) = 3/1 = 3

Question 5

A function is which of the following groupings?

Accepted Answer

{(-7, 2), (-3, 4), (-1, 3), (0, 0)}

Answer

Correct answer:
The x-values of functions do not repeat.

AzM2 Practice Test

AzM2 Practice Test

AzM2 Grade 8 Math Test