Question 1168791
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y - y1 = m(x - x1) ... Point Slope form


y - y1 = -1(x - x1) ... plugging in the given slope


y - (-7) = -1(x - 4) ... plugging in the given point


y + 7 = -1(x - 4)


y + 7 = -1*x -1*(-4) ... distribute


y + 7 = -x + 4


y + 7 - 7 = -x + 4 - 7 ... subtracting 7 from both sides


y = -x - 3


Answer:  y = -x - 3
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