Question

So, part one of 2. Do I combine like terms? http://prntscr.com/bz0ogg

Answer 1

@TheSmartOne

Answer 2

No, you plug in x = -3 in to the equation and solve for y

Then you plug in y = -4 in to the equation and solve for x :)

Answer 3

So, in this case.

6x+7y=4x+4y

Input x (-3)

-18 + 7y = -12 + 4y

Input y (-4)

-18 - 28 = -12 - 16

This statement is not true.

Answer 4

Oh, no, not like that :P

First part of the question, you plug in x = -3
-18 + 7y = -12 + 4y

Now you solve for y

Each point is an (x, y)
x is the input, y is the output value
you plug in x to get a y

occasionally they make you plug in y to get x to make sure you understand that as long as you have one value, you can find the other

to do the next part of the question, you plug in y = -4

6x + 7(-4)=4x + 4(-4)

And you solve for x :)

Answer 5

Do I add -12 on both sides?

Answer 6

-18 + 7y = -12 + 4y

Yes, add 12 on both sides, and then subtract 7y on both sides. And then divide by whatever coefficient there is with y on both sides to isolate y :)

Answer 7

-18+7y = -12+4y
+12 +12

-6+7y = 4y
-7y -7y

-6 = -3y

Answer 8

Is that it?

Answer 9

@TheSmartOne

Answer 10

now solve for y :)

Answer 11

y = 2

Answer 12

Is it right?

Answer 13

yes, now that's the answer for one part of it

now we need to do the second half of the question and find the x-value for when y = -4

6x + 7(-4)=4x + 4(-4)

solve for x :)