Question

Please help??
Solve the system of equations
2x+y=-11
3x-4y=11

Answer 1

A. (3,5)
B. (-5, -3)
C. (-3,-5)
D. (5,3)

Answer 2

first line can be re-arranged to y = -11 - 2x. you can plug this in the second line:

3x - 4(-11 -2x) = 11

3x + 44 + 8x = 11
11x = -33
x = -3

plug x = -3 in either the first or second row (same answer; good way to double check if you're right by expecting them both to be the same)

y = -11 -2(-3) = -5

answer : (-3, -5)

Answer 3

Thanks so much!!