The repair bill, y, of a car is proportional to x the number of labor hours. The constant of proportionality is 42.50. Which will check that y is proportional tox?Graphy 42.50x and check that the graph is a straight line that goes through (0,0)Graph 42.50 y and check that the graph is a straight line that goes through (0,0)Graph y 42 50 x and check that the graph is a straight line that goes through (1, 0)Graph y 42.50 x and check that the graph is a straight line that goes through (140)