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

Question

4879 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-05-04T02:47:00

Explanation below:

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:

$y + 6 = 4(x + 1)$

Distribute 4 to x and 1. Simplify.

$y + 6 = 4x + 4$

Subtract 6 from both sides.

$y = 4x – 2$

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