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

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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]}