Question

The slope of the line below is 3. Use the coordinates of the labeled point to find the point-slope equation of the line.
(6,8)
A. y - 6 = -3(x - 8)
B. y - 8 = -3(x - 6)
C. y - 8 = 3(x - 6)
D. y - 6 = 3(x - 8)

Answer 1

point slope form is \[y-y _{1}^{?}=m(x-x _{1}^{?})\]
*ignore the Q marks

Answer 2

What are the points on the line?

Answer 3

(6,8)

Answer 4

sub in the points on for y1 and x1, then sub 3 in for m. What'd ya get?

Answer 5

hold on one sec

Answer 6

ok sorry my dog wanted to go outside.
so replace y with 6 and x with 8? or replace the 1's?

Answer 7

ok this is something idk exactly how to do

Answer 8

There are 2 diffrent xs and 2 diffrent ys in the point slope equation. They only want you to use one right now. What I was trying to say is.
\[y _{1}=6\]
\[x _{1}=8\]
and
\[m=3\]
in
\[y-y _{1}=m(x-x _{1})\]
sub them and what do ya get?

Answer 9

well 6-8 =-2

Answer 10

Ohhhhh. wait
it would be A.

Answer 11

Sorry no all you have to do is substitute, not subtract. so y- ____=____(x-_____)

Answer 12

y - 6 = -3(x - 8)
So it wouldn't be that but replace y with 6 and x with 8?

Answer 13

Yes