Asked by Red
The slope of a line is -2 and the line contains the points (7,4) and (x,12). What is the value of x?
Answers
Answered by
Steve
since the slope is -2, y decreases by 2 when x increases by 1.
since y increased by 8, x decreased by 4, so (3,12) is the other point.
since y increased by 8, x decreased by 4, so (3,12) is the other point.
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