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

19

step-by-step explanation:

table 3 represents a direct variation function. : )