Question

What is the solution of the system? Use elimination.

3x – 4y = –24
x + y = –1

A. (–4, 3)

B. (0, 6)

C. (3, 4)

D. (4, 3)

A, B, C, or D? Please explain (:

Answer 1

3x – 4y = –24 EQ 1)
x + y = –1 EQ2) mult by 4 then add

Answer 2

3x – 4y = –24
4x + 4y = –4 add to eliminate y
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7x =-28

x=-28/7
x=-4

Answer 3

now sub x=-4 to EQ2)
-4+y=-1
y=4-1
y=3
(-4,3)=(x,y) ...ans

Answer 4

Thank you mark_o..

Answer 5

yw...have fun solving..lol