# Inverse proportionWatch

#1
I know how to do it, its just that I can't approach it and it's really annoying me! Please help...
0
#2
0
1 week ago
#3
(Original post by Steve445)
...
You scribbled out the correct approach!

If is inversely proportional to then .

So you have an equation.

Use the fact that when to determine the value of in terms of .
0
#4
20=y/2x^3
20=y/8x

20 ÷ 8 is 2.5

When X 2a you do 2 ÷ 8 = 4 ?
Last edited by Steve445; 1 week ago
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