SOLUTION: if a varies directly as band a=16 when b=-8, what is b when a=4

SOLUTION: if a varies directly as band a=16 when b=-8, what is b when a=4

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Question 118330: if a varies directly as band a=16 when b=-8, what is b when a=4
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
if a varies directly as b
a = kb
--------------
and a=16 when b=-8
16 = k*-8
k = -2
-----------------
what is b when a=4
EQUATION:
Since a = -2b,
4 = -2b
b = -2
==============
Cheers,
Stan H.

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