Solve the system of equations using substitution.

Question

y = x + 6
y = –2x – 3

Answer 1

http://www.jiskha.com/display.cgi?id=1356132049

Answer 2

I still trying to do it, but it is hard for me, can you explain that again?

Thanks Ms. Sue.

Answer 3

y = x + 6
y =

Obviously y is the same in both equations.

x + 6 = –2x – 3

Combine like terms.

3x = -3 - 6

3x = -9

x = -3

y = -3 + 6
y = -3

Answer 4

Thanks, now i got it :)

Answer 5

You're welcome. :-)