Mathematics Homework Help

1. Find the constant of variation for the relationship f(x)=
50x.

       x

       f(x)

       5

       50

4. If f(x) varies directly with x, and f(x) = 45 when x = 9,
find the value of f(x) when x = 3.

  5

       9

       15

       27

 

 

5. Which does not show a direct variation between x and y?

   Y=4/x

Y=0.5x

Y=7x

7=x/9

       

 3. What is the direct variation equation if f(x) varies
directly with x and f(x) = –18 when x = 3?

       f(x) = -1/6 x

       f(x) = –3x

       f(x) = –6x

       f(x) = –15x