stuck on algebra question please help! and an explanation would be appreciated:)

Algebra
Tutor: None Selected Time limit: 1 Day

What is the equation of a line that has a slope of –3 and passes through the point (5, –9)?

Jan 5th, 2015

we can  use y= mx+b

m=3

y = 3x + b then we put the point in for (x,y)

-9 = 3(5) + b

-9 = 15 + b

b = -24

so y= 3x - 24

Jan 5th, 2015

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