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linear function equation?
what is a and b if
y=m*(1/x)
x1=4
x2=12
x3=b
y1=a
y2=18
y3=72
I need to get the answers: a=54, b=3
how can get those answers can someone help me out, thank you.
1 Answer
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- AshLv 71 year ago
Using x₂ and y₂ find m
y = m(1/x)
18 = m(1/12)
18 = m/12
m = 18*12
m = 216
Now using x₁ and y₁ find a
y = m(1/x)
a = 216(1/4)
a = 216/4
a = 54
Lastly using x₃ and y₃ find b
y = m(1/x)
72 = 216(1/b)
72 = 216/b
b = 216/72
b = 3
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