Alrightie! So we are trying to isolate independent variables! WOO HOO!
So for a.) y = mx + b which is the point-slope formula... do this :)
y = mx + b
y - b = mx + b - b
y - b = mx


b.) follow the same way I did above, but instead of dividing x, divide by m.
c.) I = prt which is the equation for interest.
divide each side by pr.
d.) This one is like a and b. So lemme show ya.


Answer: the one you have selected is correct.
ACE = 90
Function:
y = -2/3 x + 7
Substitute the given values to their respective variable and solve.
x y
-6 3
3 5
15 -3
-12 15