Question

i will fan and medal

Which ordered pair is the solution to the system of equations? x+y=4 x-y= -6

Answer 1

first isolate either x or y in one of the equations

Answer 2

ok, then what

Answer 3

what did you isolate?

Answer 4

ok, lets isolate x in the first equation.

Answer 5

x=4-y

Answer 6

now we need to plug in (4-y) for x in the second equation

Answer 7

(4-y) - y = -6

Answer 8

now solve for y

Answer 9

A.
(2, 2)

B.
(1, −7)

C.
(−1, 5)

D.
(−2, 4)

Answer 10

@iGreen