Please help me with this math problem.

Question

asked Jan 12, 2020 189k views

1 Answer

RippeR · Answer 1 · 2020-01-19T02:14:02+0000

Answer:

$y+1=(4)/(3) \,(x-9)\\$

Explanation:

The point-slope form of a line uses explicitly the coordinates
(x_1,y_1) of a point it goes through, and the slope "m" the line has, in the form:

$y-y_1=m\,(x-x_1)$

So, in this case, they give you the point (9,-1) which means that
x_1=9 , and
y_1=-1 , while the slope
m=(4)/(3)

Therefore, making use of the general form given above, we replace the general form parameters with the given values:

$y-y_1=m\,(x-x_1)\\y-(-1)=(4)/(3) \,(x-9)\\y+1=(4)/(3) \,(x-9)$