Answer:
f(x) = -1/2x - 3.
Explanation:
The slope of the line = ((-7 - -5) / (8 - 4)
= -2/4
= -1/2.
y - y1 = m(x - x1)
m = -1/2, x1 = 8 and y = -7 so:
y - (-7) = -1/2(x - 8)
y + 7 = -1/2x + 4
y = -1/2x - 3.
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