SOLUTION: what is the equation of a line with a slope of 4 and passes through point (1,-4)?

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Question 606219: what is the equation of a line with a slope of 4 and passes through point (1,-4)?
Answer by mathie123(224) About Me  (Show Source):
You can put this solution on YOUR website!
We know that the equation of a line can always be written in the form
y=mx%2Bb where m is the slope of the line and b is the y intercept of the line(keep in mind for other questions that the y intercept of a line always has an x value of 0 for it).

Using this we have
m=4
and a point that we can use:
x=1
y=-4

Now substituting these points into our line equation we will solve for b:
y=mx%2Bb
-4=4%2A1%2Bb
-4=4%2Bb
-4-4=b
b=-8

So we have our equation for our line!
y=4x-8
Hopefully this all is clear!(let me know if not:) )