Plugging in Numbers to Solve Algebraic Questions

Solve for y
x= 2
y= 3x + 2

• y = 2

• y = 8

• y = 5

• y = 6

Solve for y
x= 1
y= x + 5

• y = 6

• y = 9

• y = 5

• y = 10

Solve for y
x= 2
y= x − 1

• y = 0

• y = 1

• y = 2

• y = -1

Solve for y
x= 7
y= x − 5

• y = 0

• y = 1

• y = 2

• y = 3

The table shows Sandra's weekly earnings, y , based on the number of hours she works. Which equation can Sandra use to calculate her weekly earnings when she works x hours?

​ (a)  

• y = 8x

• y = 5x + 40

• y = 10x

• y = 10x + 80

The equation for the table below is y=2x+5, fill in the missing values.

c

d

e

f

0

3

4

7

9

-1

The table shows Sandra's weekly earnings, y , based on the number of hours she works. Which equation can Sandra use to calculate her weekly earnings when she works x hours?

• y = 8x

• y = 5x + 40

• y = 10x

• y = 10x + 80

Solve for y
x= 10
y= 2x − 4

• y = 6

• y = 10

• y = 14

• y = 16

Solve for y
x= 5
y= 3x − 9

• y = 6

• y = 8

• y = 15

• y = 21

Solve for y
x= 2
y= 4x + 2

• y = 2

• y = 8

• y = 10

• y = 16