Question

20. Write the equation of a line that is parallel to the line connecting (2,5) and (-1,-4).

I know that parallel means that they share slope. So I use the slope method.

-4 -5= -9

-1-2= -3 so -9/-3 And I get 3, I understand that. I they're parallel. So the slope is 3. I don't know how to find the Y-intercept to finish the equation.

Answer 1

okay well if the slope is three and you are the point x=-1 and y=-4 if you move one point up to x=0 then you need to move up 3 bc the slope is 3 so the y intercept would then be -4+3=-1

Answer 2

does that make sense?

Answer 3

Sort of so it's 3x-1?

Answer 4

Y= mx +b where b= y intercept and m = slope. so yes Y=3x-1

Answer 5

Thank you!

Answer 6

check to see if you are right. plug 2, and -1 in and see what you get

Answer 7

Yep it works :)