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17 September, 17:16

Do, k (-7, y) → (14, - 5) a 1.25b 2.5c 5 d 10

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  1. 17 September, 18:02
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    K (-7; y) → (14; - 5)

    (14; - 5) = (-7k; ky) therefore - 7k = 14 and ky = - 5

    -7k = 14 ⇒ k = - 2

    subtitute to ky = - 5

    -2y = - 5 |divide both sides by (-2)

    y = 2.5

    Answer: b. 2.5
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