How many solutions does this system have? X-y=-4 3x+y=8 O one O two O an infinite number O no solution

Question

asked May 2, 2021 35.1k views

2 Answers

Johanny · Answer 1 · 2021-05-03T04:55:15+0000

There's only 1 answer. (1, 3.2)

Explanation:

X-y=-4

3X+y=8

Y's cancel

4x=4

X=1

Substitute the 1 for X and solve

-4(1-y=-4)

3(1)+y=8

-4+4y=16

4+y=8

X's cancel

5y=16

Y=3.2