Question

Can someone please help me? I don't understand this.

A system of equations is given below:

y = –2x + 1
6x + 2y = 22

Which of the following steps could be used to solve by substitution? (4 points)


Select one:


a. 6x + 2(–2x + 1) = 22

b. –2x + 1 = 6x + 2y

c. 6(–2x + 1) + 2y = 22

d. 6(y = –2x + 1)

Answer 1

Explanation:

I would say the first one A

Answer 2

Substitution is when you take the x (or y) value in the first equation and insert it into the second equation, and solve for both values.

y = –2x + 1
6x + 2y = 22

Now, given the y value (first equation), we can insert that into the SECOND equation.

6x + 2(-2x + 1) = 22

the only choice that demonstrates the above equation is A)

So, here's your answer ⇒ a. 6x + 2(–2x + 1) = 22

Good luck with your assignment!