Write an equation in the form y = mx + b for the line which passes through (6, 5) and
(8, 23).
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1 answer

The slope of the line is (5+23)/(6+8) = 2
So, using the pointslope form of a line,
y5 = 2(x6)
y5 = 2x12
y = 2x7
Or, you could go through the hassle of solving
6a+b = 5
8a+b = 23
subtract to get
14a = 28
a=2
so b = 7 👍
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Steve
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