A food service worker earns $12 per hour. How much money, m, does the worker earn on a shift of h hours? Determine the independent and dependent variables.

m=12h

The dependent variable is m. The independent variable is h or hours worked. M or money earned is dependent because it will vary depending on the number of hours worked.

Step-by-step explanation:

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.