How do I do this math problem? (please see details)

How do I do this math problem? (please see details)
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1 Answer

Answer :

answer:You are correct in saying that the slope is given by the formula: m = (y2-y1)/(x2-x1) Depending on the situation, you might find this (only slightly different) formula easier: m = (y1-y2)/(x1-x2) For your problem, the slope would be m=(6–4)/(2–1)=2/1=2. After you find the slope, finding the y-intercept is easy. Use the formula y=mx+b. This is called the slope-intercept form of a line, which gives the y-coordinate given the x-coordinate. The m is the slope, and the b is the y-intercept. Substitute this formula with the y coordinate of either of the points and the x coordinate of the same point, along with the slope you found earlier. 4 = 2*1+b b=2 This means that the y-intercept is 2. You can verify this by graphing the line on graph paper.
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