holahoopa45 holahoopa45
  • 22-05-2019
  • Mathematics
contestada

Given the points (0,1) and (-2,5) and on a line, find its equation in the form y= mx+b.

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altavistard
altavistard altavistard
  • 22-05-2019

Answer:

the desired equation is y = -2x + 1

Step-by-step explanation:

As we go from (-2, 5) to (0, 1), x increases by 2 and y decreases by 4.  Thus, the slope of this line is m = rise / run = -4 / 2, or m = -2.

Starting with y = mx + b, insert the knowns:

1 = -2(0) + b.  Then b = 1, and the desired equation is y = -2x + 1.

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