SOLUTION: Write an equation of the line parallel to y=-5 containing (-4,9). Can someone please explain to me how to do this problem?

Question 1137296: Write an equation of the line parallel to y=-5 containing (-4,9).
Can someone please explain to me how to do this problem?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
y=-5 has slope of 0
Therefore it is horizontal with a y-value of -5 everywhere, regardless of x.
(-4, 9) is parallel to y=-5, so that must have slope 0 as well. That means that its equation is y= constant
and x doesn't matter. The constant is 9, the value of y everywhere.
answer is y=9
That will contain (-4, 9) and (any x, 9) and be parallel to y=-5
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