Burro Travel Bureau arranges trips for descending into the Grand Canyon. For each trip, they charge an initial fee of \$25$25dollar sign, 25 in addition to \$0.10$0.10dollar sign, 0, point, 10 for each vertical meter they descend.
Let yyy represent the fee (in dollars) of a trip where they descended xxx vertical meters.
Which of the following information about the graph of the relationship is given?