delexciaprathep2pj9e delexciaprathep2pj9e

06-02-2018
Mathematics

contestada

If the point (a,7) lies on the graph of the equation 5x-y=8, then a=
a) -3
b) 3
c) 1/5

Respuesta :

dannielle dannielle

06-02-2018

when y=7

5x- 7 = 8

5x=8+7

5x=15

x=15:5
x=3
the answer is b

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