The temperature in Vancouver was recorded over a period of four hours. The equation
y = -2x + 43
describes the temperature over this time, where yis the temperature in
degrees Fahrenheit (*F) and x is the number of hours since measurements
started. Which of the following statements correctly describes the
temperature?
A. It was 43°F after four hours, and it is dropping by 2 degrees per
hour
B. It was 43°F when the temperature was first measured, and it is
dropping by 2 degrees per hour.
C. It was -2°F after four hours, and it is rising by 43 degrees per hour.
D. It was -2°F when the temperature was first measured, and it is
rising by 43 degrees per hour.