Steps to Solve for Y

Solve the formula for y.  What is the 1st step? 

• Subtract B from each side.  

• Divide each side by Ax. 

• Divide each side by B. 

• Subtract Ax from each side. 

Solve the formula for y.  What is the 2nd step? 

• Divide each side by B. 

• Multiply each side by y. 

• Multiply each side by B. 

• Divide each side by y. 

Solve for y:

4x-y=3 ---> y=​ (a)   x​ (b)  

• 4

• -3

• -4

• 3

• 3/4

• 4/3

• -1/4

Solve for y:

3x+y=4 ---> y=​ ​ (a)   x​​ (b)  

• -3

• +4

• -4

• 3

• 3/4

• 4/3

• -1/4

What do you do for the following problem?

• Simplify (distribute & combine like terms)

• Solve for x

• Solve for y

Solve for y
5x + y = -10

• y = 5x + 10

• y = -5x - 10

Solve for y.  3x + y = 12

• y = -3x +12

• x = y + 4

• x = y + 12

• y = 3x -12

Solve for y.  y - 4x = 8

• y = 4x + 8

• y = -8x + 4

x - y + 4 = 0

• y = x + 4

• y = 4x + 1

In this system

x+3y=9

4x-2y=-6

it'll be easiest to start by solving the first equation for x.

The result of doing so is x=​9-3y.

Fill in the blanks to plug that expression in and solve for y:

4(​ (a)   )-2​ (b)   =-6

36-​ (c)   y-2y=​ (d)  

36-​ (e)   =-6

• 9-3y

• y

• 12

• -6

• 14y

• x

• 10y

• x+3y

• 24y