Question 890851
How would you find an equation  of the horizontal  line that passes through the point (-4,-8)?

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When a line is horizontal, that means that every point on that line is going to have the same y-coordinate. 

Since the y-coordinate is -8, then every single point will look like (x,-8)

So we plot the line y= -8

{{{ graph( 300, 200, -10, 10, -10, 10, y=-8) }}}

And we see that (-4,-8) is on the line.