Answer:
(-9, 0)
Explanation:
Look at the point in your answer. Its y-coordinate is zero. The x-intercept is where the line intersects the x-axis. At the x-axis, every point has y-coordinate zero. Set y equal to zero and solve for x.
-2x + (1/2)y = 18
-2x + (1/2)(0) = 18
-2x = 18
x = -9
Answer: (-9, 0)