Question

Find the equation and slope of a line that is parallel to the -axis and passes through the point (3,-7). Click on "Undefined" as the answer if necessary.

Answer 1

The equation of a line parallel to the y-axis is x = k, where k is a constant. Since we want the line to pass through the point (3,-7), the equation is x = 3. Therefore, the slope of the line is undefined.