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25-01-2020
Mathematics

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Write the equation of the line. A line that passes through (5,7) and (9-5).

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kamraaa kamraaa

25-01-2020

y = mx+c

7 = 5m + c
-5 = 9m + c
Substitute the 2 equations:
12 = -4m
m = -3

Use one of the point:
7 = -3(5) + c
7 = -15 + c
c = 22

Therefore the equation is:
y = -3x + 22

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