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4 votes
Calculate the slope of the line 4x+5y=20

1 Answer

6 votes
4x+5y =20
subtract 4x from both sides:

5y = 20 - 4x
divide both sides by 5

y = 4 - 4x/5

rewrite in slope intercept form:

y = -4/5x +4

the slope is -4/5

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