solve the system by the substitution method...18x-2y=16 and y=9x+8

Question

pokemon23 · Answer

can't keep up with my tutor :'(

anonymous · Answer

i think there is only one equation given. . although there are 2, but if you will try to express the terms in its lowest terms they're just the same. . .

anonymous · Answer

hero it says the answer is supposed to be an ordered pair i think you have to solve them seperatley

hero · Answer

x = -3.2

you have to find y

anonymous · Answer

ok cool thanks do i solve for y in the bottom equation

anonymous · Answer

there is something wrong with hero's computation. . . it's not 8!!! it's 18. . .

hero · Answer

You can use either original equation to find y

anonymous · Answer

hero he is right it is 18 unless you just reduced it to that

anonymous · Answer

like equation can't be solved. . .

hero · Answer

18x-2(9x+8) = 16
18x - 18x + 16 = 16

0 = 32

No Solution

anonymous · Answer

my answer choices are infinitely many solutions or the solution is an empty set which one do i choose?

hero · Answer

empty set = no solution

c'mon, you should know that

anonymous · Answer

Sorry i dont i am no good at math :/

anonymous · Answer

that would be settled then. . .

hero · Answer

I don't understand how students post questions not knowing anything at all. You should know SOMETHING. At least one thing

anonymous · Answer

i know how to do the substitution method i am just terrible at math in general and dont understand it.

hero · Answer

http://www.ixl.com Try that

hero · Answer

Review algebra lessons

anonymous · Answer

ok i will give it a try thanks