Question

Use the substitution method to solve y=4x+5 and y=-2x-7

Answer 1

do you want me to find y or x?

Answer 2

umm well i need to fin x and y

Answer 3

okay thats easy

Answer 4

to find x...
y=4x+5

Answer 5

I want to think about what is the first step?

Answer 6

you

Answer 7

Well i have to plug in the first equation into the second right?

Answer 8

No.
The 1st step is...
to find the y..
you bring -5 into the y side

Answer 9

find x..

Answer 10

then you divided by 4

Answer 11

Let me show you

Answer 12

this may sound stupid but why is the 5 now negative?

Answer 13

No it is