Solving for Y extension

Solving for Y extension

Let's review the steps

• Move the x to the other side by + or -

• Divide by the number if front of y

Open Ended

What is the first step in solving 3x+2y=10 for y?

What is the first step in solving 3x+2y=10 for y?

subtract 3x from both sides: +2y=10-3x

Multiple Choice

Which of the following equations is equivalent to $9x-7y=-7$ 

•  $y=-\frac{9}{7}x-7$  

•  $y=\frac{9}{7}x+1$  

•  $y=\frac{7}{9}x+1$  

•  $y=-\frac{9}{7}x+1$  

Multiple Choice

What is the equation  $3x-2y=-16$  solved for y?

•  $y=-\frac{3}{2}x+8$  

•  $y=\frac{3}{2}x-8$  

•  $y=\frac{3}{2}x+8$  

•  $y=-\frac{3}{2}x-8$  

Multiple Choice

3x + y = 12

• y = -3x +12
• x = y + 4
• x = y + 12
• y = 3x -12

Why do we need to solve for y?

• So we can graph in desmos

• You can only graph things that start with y=

Multiple Choice

Which graph represents 2x + 4y = 12?

Step 1: Solve for y

Step 2: Graph in desmos