Question

question 2 of 10
the equation y = ax describes the graph of a line. if the value of a is positive, the line:
a. is horizontal.
b. is vertical.
c. goes up and to the right.
d. goes down and to the right.

Explanation:

Step1: Recall slope - intercept form

The equation $y = ax$ is in slope - intercept form $y=mx + b$ (where $b = 0$ and the slope $m=a$).

Step2: Analyze positive slope

When the slope $a>0$, as $x$ increases (moves to the right), $y$ also increases (moves up). So the line goes up and to the right.

Answer:

C. goes up and to the right.