Question

Use substitution for this problem.
3x+y=5
6x=10-2y

Answer 1

I already have like...
3x+y=5
6x+2y=10

Answer 2

hm, it wants you to use substitution

start from the beginning

Answer 3

3x+y=5
6x=10-2y

now divide the second equation by 2

Answer 4

The whole equation

Answer 5

?

Answer 6

yes, divide the second equation by 2

Answer 7

i got
3x+y=5
3x+y=5

Answer 8

good, so, notice anything special about the two equations?

Answer 9

they are the same!

Answer 10

yeah, so what is our solution?

Answer 11

(0,0)

Answer 12

hmmmm not quite

Answer 13

when we have two equations that are the same, that means that there are an infinite number of solutions

Answer 14

oh right

Answer 15

thank you