Answer:
15x*45 i think
Step-by-step explanation:
Point-slope form is

where y1 and x1 are your points from the coordinate and m is the slope. So yours would look like this: y-(-4)=-3(x-(-1)) or y + 4 = -3(x + 1)
28 x 75% = 21
Jenna ordered 21 large shirts.
Rearranging y = 8x -4y = 12 in the y = mx + b form gives y = 2x - 3
y = 2x - 3
y = mx - 6 (already in y = mx + b form)
--------------
Parallel lines have the same slope.
m = 2
Note that the two lines have the different y-intercepts and are not the same line.