+27 Find the value of c such that the three points (5,5), (-3,1), and (6,c) lie on the same line.
+1009 Here is a graph.
The slope is 5-1 = 4 divided by5 + |-3| = 8, so the slope is 1/2.
Thus the y value increases 1 for every +2 in the x.
You can calculate c now.
If you don't understand anything feel free to ask.
