Question

How many solutions does the system of equations have?
x=-4y+4and 2x+8y=8
a.one
b.two
c.infinitely many
d.none

Answer 1

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Have you tried graphing the equations?

Answer 2

no I haven't

Answer 3

Do you know how to graph them?

Answer 4

I will try that

Answer 5

We could also put the equations into the same format if that would be easier for you?

Answer 6

yeah sure

Answer 7

Ok, we will go with the format of the first equation, x=-4y+4. We need to put 2+8y=8 into that format.

Answer 8

So, what do you think we do first?

Answer 9

ummmm

Answer 10

We need to take +8y to the other side, so do the opposite of adding on both sides.

Answer 11

Does that make sense?

Answer 12

kind of

Answer 13

We will need to subtract 8y from both sides. 2x+8y-8y=-8y+8. 8y-8y is 0, so now we are left with 2x=-8y+8

Answer 14

Since we have 2*x, we need to divide each term by 2. I'll start it off for you, x=(-8y/2)+(8/2)

Answer 15

ok