A set of equations is given below:

Equation S: y = x + 9
Equation T: y = 2x + 1

Which of the following steps can be used to find the solution to the set of equations?

x = 2x + 1
x + 9 = 2x
x + 1 = 2x + 9
x + 9 = 2x + 1

Question

A set of equations is given below: 

Equation S: y = x + 9 
Equation T: y = 2x + 1 

Which of the following steps can be used to find the solution to the set of equations?

 x = 2x + 1
 x + 9 = 2x
 x + 1 = 2x + 9
 x + 9 = 2x + 1

nuccioreggie · Answer

@whovianchick

whovianchick · Answer

When you wanna solve for the solution, and they're both y=, you can set them equal to each others. If y=x, and x=2, then y=2, get it?

So, it would be D, because it says that if y=x+9, and 2x+1=y, then x+9=2x+1