Question 1059008
The slope of a line is -2 and the line contains the points (7,4) and (x,12). What is the value of x?
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Form:: y = mx + b
Using m = -2, x = 7 and y = 4, solve for "b"::
4 = -2*7 + b
b = 18
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f(x) = -2x + 18
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Ans:: using (x,12), solve for "x":
12 = -2x + 18
2x = 6
x = 3
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Cheers,
Stan H.
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