Grade 9 Exam Review

Numeracy

100

10-4(5-3)+5²

27

200

8/3  +  1/12

33/12

300

Collect like term:

2x+7y-9x+y-3y+x+10

-6x+5y+10

400

Expand and simplify:

7(x-3) -2(7x+2y-3)

-7x-15-4y

500

(2/3)(3x+6) -2(4x-5)

-6x+14

Solving Equations

100

x/2 = 10

x=20

200

2x+3= 5

x=1

300

7y-12=2y+8

y = 4

400

4(a-1)-5=7(a+3)

a=-10

500

2/3(6x-9) + 1 =1/4(8x+12)

x=4

Equation of a Line

100

Write the equation of a line with m=3 and b=-6

y=3x-6

200

Write the equation of a line to represent: 

The temperature in Windsor is 25° and expected to fall 3°/hour overnight. 

y=-3x+25

300

Find the equation of a line with m=3 and (-1, 6)

y=3x+9

400

Find the equation of a line with m=-1/4 and passing through (-4, -6)

y=-1/4x -7

500

Find the equation of a line passing through (4, 1) and (11, -6)

y=-x+5

Random

100

(x⁵)(x⁶)

x¹¹

200

What is 8% written as a decimal?

0.08

300

(y⁹)² / y⁵

y¹³

400

What is 90% of 350?

315

500

(2x⁴)³(x⁴y²)y⁵ / (2x⁵y)²(xy³)

2x⁵y²

Data

100

What is Q2?

The median

200

How do you find the mean?

Add everything together and divide by how many numbers you have

300

Find the mean median, and mode: 

8, 6, 3, 10, 23, 3, 9

round to two decimal places

mean=8.86

median=8

mode=3

400

find the quartiles: 

10, 45, 68, 23, 41, 90, 75, 18

q1=20.5

q2=43

q3=71.5

500

Draw a boxplot for the data: 

10, 42, 73, 81, 23, 24, 23, 27, 54, 41, 60

q1 = 23

q2 = 41

q3 = 60