## anonymous one year ago Determine whether y varies with x, if so, find the constant variation of k and write the equation.

1. Nnesha

what is the equation for direct variation ?

2. anonymous

X Y 4 6.4 7 11.2 10 16 13 20.8

3. anonymous

@Nnesha

4. anonymous

it increases by 1.8 each time..

5. Nnesha

y =kx equation for direct variation you can solve for k so divide both sides by x $\huge\rm \frac{ y }{ x }=k$ now divide y by x if you get same number then yes

6. anonymous

Thank you

7. Nnesha

$$\color{blue}{\text{Originally Posted by}}$$ @Justmeneedinghelp it increases by 1.8 each time.. $$\color{blue}{\text{End of Quote}}$$ by 1.8 or 1.something else ? :D

8. Nnesha

so k=what ?

9. anonymous

1.6

10. Nnesha

yes right :=) good job!