Dezaray23 Dezaray23

25-05-2015
Mathematics

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A line has slope 2/5 and passes through the point P(2,7) find the equation

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25-05-2015

so (x,y)
one answer is x=2
y=7
in slope intercept form
y=mx+b
m=slope
b=y intercept
slope is 2/5
y=2/5x+b
solve for b by subsitute
y=7
x=2
7=2/5 times 2+b
7=4/7+b
subtract 4/7 from both sides
6 and 3/7=b
the equaiton is
y=2/5x+6 and 3/7

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