SOLUTION: If a line passes through the point (4,-2) and has a slope of 4, what is the equation of the line?

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Question 674481: If a line passes through the point (4,-2) and has a slope of 4, what is the equation of the line?
Answer by jokaehler(26) About Me  (Show Source):
You can put this solution on YOUR website!
We need to find the equation of the line in y = mx + b form. We are given y (-2), m(4), and x(4) from the question. We need to find "b." So we must rearrange the equation to find "b."
y - mx = b

Plug in the given variables (y, m, and x)
+-2+-+%284+%2A+4%29+=+b+
+-2+-+4%5E2+=+b+
+-2+-+16+=+b+
+-18+=+b+

Since "b" is "-18," we now have all the information required for the equation...

y = 4x - 18