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Mathematics 16 Online
OpenStudy (anonymous):

The equation of the line that passes through (2, 6) and (3, 12) in point slope form is:

OpenStudy (mattfeury):

do you know how to find slope?

OpenStudy (anonymous):

no

OpenStudy (mattfeury):

slope = change in y / change in x aka, \[slope = \frac{y_2 - y_1}{x_2 - x_1}\]

OpenStudy (anonymous):

so 6?

OpenStudy (mattfeury):

you have to sets of coordinates, each one is (x, y). you can use those to find the slope

OpenStudy (mattfeury):

yep!

OpenStudy (mattfeury):

do you know what point-slope form is?

OpenStudy (anonymous):

y1+b(x-x1)?

OpenStudy (mattfeury):

right again! but you're missing the crucial point that makes this an actual equation: the equals sign: y = y1 + b(x - x1)

OpenStudy (mattfeury):

so b = slope and you know a set of coordinates you can use for (x1, y1)

OpenStudy (anonymous):

thanks

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