Math 9 Review

Rational Numbers

100

What is -2 + 7?

5

200

What is -3 - 8?

-11

300

What is the value of -3 × (-4)?

12

400

12 ÷ (-3)

-4

500

(-2/3) + (4/5)

2/15

Exponents & Powers

100

2⁴?

16

200

3² × 3³

3⁵ or 243

300

What is the value of (2³)²?

64

400

10⁰?

1

500

5⁶ ÷ 5²

5⁴ or 625

Linear Relations

100

What is the slope of a horizontal line?

0

200

What is the y-intercept of y = 2x + 4?

4

300

Determine the slope between (1, 2) and (3, 6).

2

400

 What is the equation of a line with slope -3 and y-intercept 5?

y = -3x + 5

500

A line passes through (0, -2) and (4, 2). What is the slope?

1

Solving Equations

100

x+5=12

x=7

200

4x=20

x=5

300

3x−4=2x+6

x=10

400

2(x+3)=3(x−1)

x=9

500

3xy+4x−2xy+6−x

xy+3x+6

Similarity & Scale

100

Two similar triangles have side lengths of 3 cm and 6 cm. What is the scale factor?

2

200

A shape is enlarged by scale factor 3. If original side is 4 cm, new side is?

12cm

300

Triangles with sides 5,10,15 and 10,20,30 – are they similar?

Yes

400

Triangle with sides 6,8,10 enlarged by 1.5 – new hypotenuse?

15cm

500

Rectangle reduced by scale factor 0.25. Original area 64 cm². New area?

4 cm²