Question

use the system of elimination method to solve the system of equation
a +8b=12
a +3b = 2

Answer 1

R1=(a+8b=12)
R2=(a+3b=2)
R1-R2
5b=10
b=2

Answer 2

ok if b = 2 then of the answers give it is a ordered pair of (0,2)
a solution that infinite solutions
or no solutions

Answer 3

you have to go back and solve for a

Answer 4

back- substitution
replace b=2 into R1 or R2 and solve for a

Answer 5

I understand that guys im just having trouble i have the subsitution for b in there just lost on what to do next

Answer 6

a+8(2)=12

solve for a :)

Answer 7

if I understand it right a = 0

Answer 8

no

Answer 9

no ari if your equation is right the a = -4

Answer 10

yes

Answer 11

so the it would be a ordered pair with (2,-4) being the answer

Answer 12

if it's (a,b) if would be (-4,2)

Answer 13

it*

Answer 14

ok