Linear Functions

SAT Math· difficulty 3/5

A scuba diver descends at a constant rate. Her depth (m below surface) after tt seconds is D(t)=0.5t+2D(t) = 0.5t + 2. What does 0.50.5 represent?

  • A

    Time to surface

  • B

    Total depth

  • C

    Initial depth

  • D

    Descent speed (m/sec)

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Explanation

Slope = rate of depth change with respect to time = 0.50.5 m/sec.

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