Question

Write an equation in slope-intercept form of the line with slope −4/5 that contains the point (−5, −4).

Answer 1

From the slope our equation so far is
y = -4/5x + B
Now we find B
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To find be all we have to is substitute (-5,-4) for x and y in 3x + 5y = 15
(-4) - (-4/5)( -5) = b
-8 = b
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So your equation would be y = -4/5x - 8