Question

Solve x + 3y = 9
3x – 3y = –13

A. (–1, ten thirds)

B. (1, negative ten thirds)

C. (–1, 3 over 10)

D. (1, negative 3 over 10)

Answer 1

Add both equations.

Answer 2

answer is A?

Answer 3

the answer is (A).

if you add the two expressions:

x + 3x = 4x
3y + (-3y) = 0
9 + (-13) = -4

you end up with: 4x = -4, so x = -1

You plug -1 into either one of the original expression and you should end up with y = 10/3

Answer 4

Is this algebra 1

Answer 5

@juliaann You might want to learn to do these now; we wont always be there to give you the answers.

Answer 6

algebra 2! @Courage.

Answer 7

Summer class

Answer 8

A

Answer 9

@primeralph yes i know I only post the ones i have a hard time with