Question

Write the equation of the line that is parallel to the line y = -3x + 12 and passes through the point (-1, 6).

y = one thirdx + 7

y = -3x + 3

y = one thirdx + 3

y = -3x + 7

Answer 1

@iGreen

Answer 2

y = mx + b

m = slope

y = -3x + 2

Remember, parallel lines have THE SAME slope.

Okay, you can already eliminate two choices, which ones are those?

Answer 3

a and c?

Answer 4

Yes!

Because their slopes are 1/3, and you need slopes with -3.

Answer 5

So B and D are our choices.

We can plug in (-1, 6) into both of them to see which one it is.

y = -3x + 3

Plug in (-1, 6):

6 = -3(-1) + 3

Can you finish that?

Answer 6

I'm still a little confused

Answer 7

Okay, well we have to multiply -3 and -1, can you do that?

Answer 8

3?

Answer 9

Yep.

That gives us 6 = 3 + 3.

Now add that and what do you get?

Answer 10

6

Answer 11

Yep, so it gives you 6 = 6, and that's true.

So y = -3x + 3 is the correct answer.

Answer 12

I have 1 last qestion thats it will you help?

Answer 13

Sure.