Answer:
-27
Step-by-step explanation:
Find the zero means find when y is 0.
You have the equation:
y=(1/3)x+9.
You want to solve the equation
y=(1/3)x+9 for x when y=0.
0=(1/3)x+9
Subtract 9 on both sides:
-9=(1/3)x
Multiply both sides by 3:
-9(3)=x
Simplify:
-27=x
The zero is at x=-27.
