Question

Please help me with my homework! It is due tomorrow and I don't know how to do this! -.-
Solve the system by substitution, make sure to show work.

-4.5x-2y=-12.5
3.25x-y=-0.75

Answer 1

first isolate y in the second equation

3.25x-y=-0.75

-y=-0.75-3.25x

-y = -3.25x-0.75

y = 3.25x+0.75

Answer 2

then plug this into the first equation

-4.5x-2y=-12.5

-4.5x-2(3.25x+0.75) = -12.5

now solve for x

Answer 3

ok, so x=1 now what?

Answer 4

now plug that into y = 3.25x+0.75 to find y

Answer 5

y=4

Answer 6

correct

Answer 7

so x=1 and y=4, is that all that needs to be done?

Answer 8

yes it is

Answer 9

thanks :D

Answer 10

np

Answer 11

might have a couple more later