Question

Solve the system of linear equations below.

y = -2x + 19
y = x + 7

Answer 1

A. x = 4, y = 11
B. x = -12, y = -5
C. x = -4, y = 3
D. x = 8, y = 3

Answer 2

since
y= -2x + 19
and
y = x + 7
therefore:
x + 7 = -2x + 19

Answer 3

ok i dont understand

Answer 4

y = -2x + 19
y = x+7
Y is both equal to x + 7 and -2x + 19
Substituting for Y

x + 7 = -2x + 19

Answer 5

oh ok what do i do after that

Answer 6

Solve for x.

Answer 7

i got it thanks

Answer 8

no problem

Answer 9

If you get x = 4, you are right. But your homework is about how to find it.

Answer 10

Do not forget after to find y by substituting the value of x that you found in y = x+7. So if x = 4, you have y = x+7 = 4+7 = 11