SOLUTION: If a function g is such that g(-1)=-7 and g(3)=8 then how do i go about finding an equation for g(x) if g(x) is a linear function???????????

Question 458818: If a function g is such that g(-1)=-7 and g(3)=8 then how do i go about finding an equation for g(x) if g(x) is a linear function???????????
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If a function g is such that g(-1)=-7 and g(3)=8 then how do i go about finding an equation for g(x) if g(x) is a linear function???????????
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You have 2 points: (-1,-7) and (3,8)
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slope = (8--7)/(3--1) = 15/4
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Form: y = mx + b
8 = (15/4)3 + b
32/4 = 45/4 + b
b = -13/4
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Equation:
y = (15/4)x - (13/4)
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Cheers,
Stan H.
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