# How do you graph equations that are written in point-slope form?

##### 1 Answer
May 4, 2018

Explanation below:

#### Explanation:

Let's use this example from http://www.purplemath.com/modules/strtlneq2.htm to help you understand how to graph point-slope form equations:

$m = 4$, x_1 = –1, and y_1 = –6 are given.

Formula:

y – y_1 = m(x – x_1)

Plug-in your variables:

y – (–6) = (4)(x – (–1))

Simplify. Two negatives make a positive:

$y + 6 = 4 \left(x + 1\right)$

Distribute 4 to x and 1. Simplify.

$y + 6 = 4 x + 4$

Subtract 6 from both sides.

y = 4x – 2

graph{y=4x-2 [-12.66, 12.65, -7.7, 4.96]}

Source and for more info:
http://www.purplemath.com/modules/strtlneq2.htm