EQAO Grade 9 Mathematics Assessment 2

Question 1

A linear relation is given by y = 3x − 4. What is the y-intercept?

Accepted Answer

−4

Answer

The y-intercept is the constant term in slope-intercept form y = mx + b, which is −4.

Question 2

Which expression is equivalent to 2(3x − 5) + 4x?

Accepted Answer

10x − 10

Answer

Expanding gives 6x − 10 + 4x = 10x − 10.

Question 3

A rectangle has a length of (2x + 3) cm and a width of 4 cm. Which expression represents its perimeter?

Accepted Answer

4x + 14

Answer

Perimeter = 2(length + width) = 2(2x + 3 + 4) = 2(2x + 7) = 4x + 14.

Question 4

On a number line, which value is between −3/4 and 1/2?

Accepted Answer

0

Answer

0 lies between −0.75 and 0.5, while the other values fall outside this range.

Question 5

A store sells notebooks for $2.50 each. If a student buys n notebooks, which equation represents the total cost C?

Accepted Answer

C = 2.50n

Answer

Total cost equals the unit price multiplied by the number of items: C = 2.50n.

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