I'm very confuesed where to start this problem: graph −18x+9y=72

Plug in x=0 and plot the point, then plug in y = 0 and plot the point.

y=-2x+8

Step-by-step explanation:

first you have to -18x on both sides because you want to get y by itself

9y=-18x+72

then divide 9 by both sides

9y/9=-18x+72/9-18/9=-2 and 72/9=8

y=-2x+8

-2x is your slope and 8 is your y intercept

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation: