Help easy variation question

Question

0

791

4

suppose that f(x) varies directly with x and f(x) = 160 when x = 5. what is f(x) when x = 0.5?

Options
16
32
160
180

Guest Mar 20, 2018

supermanaccz · Answer 1 · 2018-03-20T05:29:19

I'n not sure, but if it is a direction variation, than

160/x = 5/0.5

x = 16

16 will be my answer, but I'm not sure.

Supermanaccz

CPhill · Answer 2 · 2018-03-20T05:34:22

We need to find the variation constant, k

We have that

f(x) = k(x)

160 = k (5) divide both sides by 5

32 = k

So when x = 0.5, we have

f(x) = 32 (0.5) = 16

Just as Supermanaccz found !!!!