4 of 54 of 5 Items

Question

Question
A researcher monitoring the power from the solar panels on a Mars landing has developed a linear model for the available power output in watts, P, against the number of days since landing, d, to help predict the change in power due to dust accumulation. The equation is P=215.4−0.422d
Interpret the y-intercept of this equation.(1 point)
Responses

The y-intercept implies that the power increases by 0.422 watts per day.
The y-intercept implies that the power increases by 0.422 watts per day.

The y-intercept implies that the lander had 215.4 watts of power available when it landed.
The y-intercept implies that the lander had 215.4 watts of power available when it landed.

The y-intercept implies that the power decreases by 0.422 watts per day.
The y-intercept implies that the power decreases by 0.422 watts per day.

The y-intercept implies that the lander will always have a minimum of 215.4 watts of power available.
The y-intercept implies that the lander will always have a minimum of 215.4 watts of power available.

Answer 1

The y-intercept implies that the lander had 215.4 watts of power available when it landed.