Question

What is the slope of the line by the equations below? y-9=15 (x-5)

Answer 1

To find the slope, you should rearrange the equation into slope-intercept form, ie. y = mx + c, where m is the gradient.

y - 9 = 15(x - 5)

y = 15(x - 5) + 9 (Add 9 to each side)

y = 15x - 15*5 + 9 (Expand 15(x - 5))

y = 15x - 75 + 9

y = 15x - 66

Therefor, the slope of the equation is 15.

Answer 2

Use the slope-intercept form

y

=

m

x

+

b

to find the slope

m

.

m

=

15

Explanation:

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