T = 1200 - 0.06c

A print shop copies and prints documents in large volume for its customers. For a particular copy

machine, the equation above gives the amount of toner, T, in grams, left after making c copies.

How many grams of toner are used per copy?

0.06

Step-by-step explanation:

This is a linear equation y = mx + b.

b, the y-intercept, is 1200. That's how many grams of toner are in the copy machine when no copies have been made.

m, the slope, is - 0.06. That's the change in T per change in C, or in other words, how many grams of toner are used for each copy.