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

Answer 1

The answer is x+9=2x+1. This is because equation S shows what y equals and then you can just substitute this into equation T!

Answer 2

Option D is correct

`x+9 = 2x+1`

Explanation:

Given the system of equation:

Equation S: y = x + 9

Equation T: y = 2x + 1

We have to find the following steps can be used to find the solution to the set of equations.

Equate the given equation S and T to solve for x, we have;

`x+9 = 2x+1`

Therefore, the following steps can be used to find the solution to the set of equations is:

`x+9 = 2x+1`