Question

Determine the solution of the system.
Y = 5x - 9
Y = 2x + 6

Answer 1

5x - 9 = 2x + 6
can you solve for x now ??

Answer 2

Well u can use substitution or elimination as well :)

Answer 3

I still need help figure that out i suck at this

Answer 4

5x - 9 = 2x + 6 --- subtract 2x from both sides
5x - 2x - 9 = 2x - 2x + 6 -- combine like terms
3x - 9 = 6 --- add 9 to both sides
3x - 9 + 9 = 6 + 9 -- combine like terms
3x = 15 -- divide both sides by 3
x = 5

now sub 5 in for x into either of the equations to find y
y = 5x - 9
y = 5(5) - 9
y = 25 - 9
y = 16

check..
y = 2x + 6
16 = 2(5) + 6
16 = 10 + 6
16 = 16 (correct)

any questions ? I tried to leave in all the steps so you could understand.

Answer 5

Thank you that helps alot!

Answer 6

glad to help :)