The cost of using a telephone in a hotel meeting room is \$0. 20$0. 20dollar sign, 0, point, 20 per minute. Which of the following equations represents the total cost ccc, in dollars, for hhh hours of phone use?.

Ifound this on google “that means that the graph of a function with direct variation has these features: it is a straight line: because the slope is the ratio y/x = k. it passes through the origin (0,0): because y = kx = k (0) = 0.” i hope this you for what your looking for