Respuesta :

Answer:

0.5

Step-by-step explanation:

The rate of change is the same as the slope. The equation y=0.5x+9 is written in slope intercept form, so 0.5 is the slope.

00081094

Answer:

Slope: 0.5

Y - Intercept: (0, 9)

x           y

-18        0

0           9

(pretend that's a graph)

Proportional: Ratios are equivalent.

Non-proportional: Ratos are not equivalent.

-18/ 0 is not equal to 0/9.

Undefined                  =0

Non-proportional