# How do you write an equation with the slope of -3 and contains the point (0, -3)?

Sep 26, 2015

the equation is $y = - 3 x - 3$

#### Explanation:

Functions with a constant gradient are commonly referred to as linear. Linear functions can take the form; $y = m x + c$ with m equal to the functions gradient and c equal to the y - intercept (when x = 0) of the function.

In this question you have been given both the y - intercept (0, -3) and the gradient m = -3 so the next step is to substitute them into the general form.

This yields the equation is $y = - 3 x - 3$

Hope this helps :)