Question

For each table, use the ratio Y to tell whether y varies directly with x or not. If it does, write an equation for
the direct variation.​

Answer 1

Answer:

Using ratio: y/x

1) y/x = 2.25/-3 = -0.75

2) y/x = -0.75/1 = -0.75

3) y/x = -3/4 = -0.75

4) y/x = -4.5/6 = -0.75

The ratio is constant for every ordered pair where k = -0.75, therefore, y varies directly with x. The equation for the direct variation is y = -0.75x.