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The temperature was 56 degrees this morning, but dropped one degree per hour through the rest of the day. The equation is y=-x+56. You may usey=56-x . They are the same equation. Use x-values: 0, 5, and 10.

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At x=0

  • y=56-0
  • y=56°C

At x=5

  • y=56-5
  • y=51°C

At x=10

  • y=56-10
  • y=46°C
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