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13 February, 07:55

Which equations represent functions?

2x + 3y = 10

4x = 16

2x - 3 = 14

3y = 18

14.6 = 2x

+1
Answers (1)
  1. 13 February, 09:47
    0
    2x + 3y = 10, 3y = 18 (in both cases, for each input x, there is exactly one output y.

    Step-by-step explanation:

    3y = 10 - 2x, or y = (1/3) (10 - 2x) Yes, this is a function.

    4x = 16 → x = 4 NOT a Function, because for x = 4 there are an infinite number of possible y - values

    2x - 3 = 14 → 2x = 17 → x = 17/2 Not a function. See reason given above.

    3y = 18 → y = 6 Function

    2x = 14.6 → x = 7.3 Not a function. See reason given above
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