Question
Find a number $c$ such that the point $(c,-19)$ is on the line containing the points (2,1) and $(4,9) .$
Step 1
The slope of a line given two points (x1, y1) and (x2, y2) is (y2 - y1) / (x2 - x1). So, using the given points, the slope is (9 - 1) / (4 - 2) = 8 / 2 = 4. Show more…
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