Consider a negatively sloped linear line in a graph where the vertical axis represents variable Y and the horizontal axis represents variable X. If the vertical intercept is 10 and the slope is -0.5, the horizontal intercept must be:
A) 5.
B) 10.
C) 20.
D) none of the above.

Question

Quizplus · Accepted Answer

The equation of the line is Y = 10 - 0.5X. Setting Y to 0 to find the horizontal intercept, we solve 0 = 10 - 0.5X, which gives X = 20.

Consider a Negatively Sloped Linear Line in a Graph Where