Answer:

Step-by-step explanation:
, substitute
to x
=
or 3.75
=
= 
Answer:
Will do
Step-by-step explanation:
Answer:
2d-3
Step-by-step explanation:
it may help you to understand
The slope-intercept form of a line is:

Where m is the slope and y is the y-intercept:

To find q (y-intercept), substitute the coordinates of the point (9, -4) in the equation of the line and solve it as an equation:
-4=3(9)+q
-4=27+q
q=-27-4=-31
The equation of the line is: y=3x-31