Question

A system of equations is given below:

y = 3x + 4
2x + 3y = 10

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

Select one:
a. 3x + 4 = 2x + 3y
b. 2x + 3(3x + 4) = 10
c. 2(3x + 4) + 3y = 10
d. 3(y = 3x + 4)

Answer 1

2x + 3(3x + 4) = 10

Explanation:

Answer 2

You have the value for y, so you substitute that equation for y, times three because there are three yS.

So you have: 2x + 3y = 10

2x + 3 x 2x + 4 or 2x + 3(3x + 4)

so the answer would be B, 2x + 3(3x + 4)