Answer:
direct variation
Step-by-step explanation:
The constant of variation k for direct variation is
k = [tex]\frac{y}{x}[/tex]
Calculate this ratio for each set of points
[tex]\frac{-10}{2}[/tex] = [tex]\frac{-20}{4}[/tex] = [tex]\frac{-35}{7}[/tex] = [tex]\frac{-40}{8}[/tex] = - 5
Then ordered pairs are in direct variation with k = - 5
The constant of variation for inverse variation is
k = xy
2 × - 10 = - 20
4 × - 20 = - 80
7 × - 35 = - 245
8 × - 40 = - 320
There is no constant thus not inverse variation
