Answer :
a line crosses the x axis when y = 0
0 = -3x - 18
Add 3x to both sides
3x = -18
Divide both sides by 3
x = -6
Graph intersects x axis at point
(-6, 0)
0 = -3x - 18
Add 3x to both sides
3x = -18
Divide both sides by 3
x = -6
Graph intersects x axis at point
(-6, 0)
