SOLUTION: Write an equation of the line that is paraellel to the equation y=3x+21 that passes through the points (-3,-7)

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Question 112889: Write an equation of the line that is paraellel to the equation y=3x+21 that passes through the points (-3,-7)
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Parallel means it has the same slope, so first find the slope
of the given line.
y+=+3x+%2B+21 This is in the form y+=+mx+%2B+b where m
is the slope, so
m+=+3
Passes through the point (-3,-7). With the slope and one point, I can find
the equation, using the point-slope formula.
m+=+%28y+-+y%5B1%5D%29+%2F+%28x+-+x%5B1%5D%29
where (x%5B1%5D, y%5B1%5D) = (-3,-7)
3+=+%28y+-+%28-7%29%29+%2F+%28x+-+%28-3%29%29
3+=+%28y+%2B+7%29+%2F+%28x+%2B+3%29
3%28x+%2B+3%29+=+y+%2B+7
3x+%2B+9+=+y+%2B+7
y+=+3x+%2B+2 answer