Question

What is the slope and equation of a line parallel to the x-axis passing through point (3,7)?

Answer 1

The equation is `y=7` and the slope is 0.

Explanation:

We know that slope is rise over run, and that all lines parallel to the x axis are horizontal. A perfectly horizontal line has a slope of zero because it never rises. We know that the equation is y=7 because it passes through point (3,7), and 7 is the y-coordinate of that point (remember we don't really care about the 3 because since the line is parallel to the x-axis, it will pass through all values of x, so the 3 is irrevalent).

If you want to visualize this, visit

https://www.desmos.com/calculator

and input y=7 and (3,7).