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31 July, 01:54

The regression equation y=0.5x+1.3 approximates the number of hours it takes to arrange a dinner event, y, given the number of people attending, x. Which statement is true

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  1. 31 July, 05:53
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    Answer: c) For every extra person attending an event, the time it takes to make arrangements increases by 0.5 hour

    y is the time

    x is nº of people

    When x=1 (one person is attending the dinner):

    y = 0,5 x 1 + 1.3

    y = 1.8 hours

    When x=2 (two peple are attending the dinner):

    y = 0,5 x 2 + 1.3

    y = 2,3 hours

    When x=3 (three people are attending the dinner):

    y = 0,5 x 3 + 1.3

    y = 2,8 hours

    the difference between 1.8 and 2.3 h is exactly 0,5 h.

    And the difference between 2.3 and 2.8 h is also 0,5 h.

    If you continue to increase x, the y will increase 0,5
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