Question

solve the system using an equivalent system
{-2x-y=0
{3x-y=10
A. (4,-2)
B. (-2,4)
C. (2,-4)
D. (-4,2)

Answer 1

You would plug in all of the plots into the equations...
So for example, (4,-2).
Plug it in, so the equation would be: -2(4) - (-2) = 0 and 3(4) - (-2) = 10
Simplified into: -6 + 2 = 0 and 12 + 2 = 10
These are both wrong, so you know the answer is not A. Try doing this for B, C, and D, until you find points that make both equations correct.

Answer 2

okay thank you:)