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18-02-2019
Mathematics

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If the point (5, k) lies on the line represented by the equation 2x + y = 9, the value of k is

Respuesta :

18-02-2019

Answer:

k = -1

Step-by-step explanation:

We have the point (5, k) and the equation 2x + y = 9.

Put the coordinates of the point ot the equation:

x = 5, y = k

2(5) + k = 9

10 + k = 9 subtract 10 from both sides

10 - 10 + k = 9 - 10

k = -1

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