Hey There,
The equation would be y = 4x - 45
Point slope formula
(y-y1)=m(x-x1)
Plug in the numbers
(y-3)=4(x-12)
Solve for y.
4 * x = 4x
4 * -12 = -48
Bring 3 to the other side (change the sign)
-48 +3 = 45
Therefore, the equation would be y = 4x - 45
(
, 3 )
to calculate the midpoint use the midpoint formula
midpoint = [
(9 + 0),
(- 1 + 7)] = (
, 3 )
Answer:
Very
Step-by-step explanation:
115*20=2300.
50*5=250
First mechanic 20 hours
Second mechanic 5 hours