Question

Use elimination to solve the system of equations given by –7x + 3y = 14 and 7x – 2y = -11.


(−5/7,3)

(−1 5/7,−35)

no solution

infinitely many solutions

Answer 1

start by adding the two equations together

Answer 2

0 + y =3 @Vocaloid

Answer 3

@Cuanchi

Answer 4

good! that means y = 3

now, substitute y = 3 back into one of the equations to find x

Answer 5

3 and -5/7
@Vocaloid

Answer 6

good!

Answer 7

Which of the following describes the system of equations 2x - y + 4 = 0 and 4x - 2y + 7 = 0?
would this be inconsistent

Answer 8

@Vocaloid

Answer 9

hm, I don't think so

Answer 10

actually, never mind, you're right

Answer 11

it's inconsistent since the slopes are the same, and the y-intercepts are not

Answer 12

ok thank you