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Calculating Slope m = y2 – y1 x2 – x1

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Examples (3, 5), (9, 7) (3, 5), (9, 7) Remember that every point is in the form (x,y). The very first thing you should do is label your points. Remember that every point is in the form (x,y). The very first thing you should do is label your points. (3, 5), (9, 7) (3, 5), (9, 7) x1x1 y1y1 x 2 y 2 Now stick them directly into the formula. 7 – 5 = 2 = 1 9 – So, the slope is 1/3.

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Examples Cont. (-1, -10), (4, -2) (-1, -10), (4, -2) Once again, label your numbers. Once again, label your numbers. (-1, -10), (4, -2) (-1, -10), (4, -2) x 1 y 1 x 2 y 2 Stick them directly into the formula. -2 – (-10) = = 8 4 – (-1) So, the slope is 8/5. Dont change this to a mixed number. Remember, slope is rise over run. It needs to look like a fraction.

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Independent Practice (5, 0), (-7, 3) (5, 0), (-7, 3) Did you remember to label your numbers? Did you remember to label your numbers? (5, 0), (-7, 3) (5, 0), (-7, 3) x 1 y1y1 x 2 y 2 Did you put them directly into the formula? 3 – 0 = 3 = 1 -7 – The slope is -1/4.

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Independent Practice Cont. (4, -3), (9, -6) (4, -3), (9, -6) Did you label the numbers? Did you label the numbers? (4, -3), (9, -6) (4, -3), (9, -6) x 1 y 1 x 2 y 2 x 1 y 1 x 2 y 2 Stick them directly into the formula. -6 – (-3) = = -3 9 – So, the slope is -3/5. 9 – So, the slope is -3/5.

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