28 March, 08:39
Find the equation in the form y=mx+b that models line (2,3) and (0,4)
28 March, 08:45
y = (-1/2) x + 4
Moving from (0, 4) to (2, 3), we see x increasing by 2 from 0 to 2 and y decreasing by 1 from 4 to 3.
Thus, the slope of this line is m = rise / run = - 1/2.
Starting with y = mx + b, we substitute 0 for x, 4 for y and - 1/2 for b, obtaining:
4 = (-1/2) (0) + b. Therefore, b = 4, and the desired equation is:
y = (-1/2) x + 4
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