Posted by Meghan on Monday, April 16, 2012 at 6:33pm.
you could just pick two points that satisfy your given condition,
pick any y,
e.g. y = 4, then x = 4 ---> (4,4)
y = 5, then 6 --> (6,5)
slope = (5-4)/(6-4) = 1/2
or
just translate "x-coordinate of each point on a line is 4 less than twice its y-coordinate"
---> x = 2y - 4
2y = x+4
y = (1/2)x + 2--- compare with y = mx + b
slope = 1/2
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