Clayton drove at a constant rate on the highway for a trip to the beach. He did not make any stops along the way. The distance Clayton had driven at any given time describes a linear function. At 3:00 p. m., he had driven 90 miles. At 4:30 p. m., he had driven 180 miles. Which statement about Clayton’s trip is true? 1.Clayton started driving at 1:30 p. m., and he drove 60 miles per hour.

2.Clayton started driving at 3:00 p. m., and he drove 60 miles per hour.

3.Clayton started driving at 1:30 p. m., and he drove 90 miles per hour.

4.Clayton started driving at 4:30 p. m., and he drove 90 miles per hour.