noahbeckett2 noahbeckett2

23-06-2017
Mathematics

contestada

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

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Banabanana Banabanana

23-06-2017

5x - y = 8

5x - 7 = 8
5x = 8+7
5x = 15
x = 3

a=x=3

Answer: a=3

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Allysia123 Allysia123

23-06-2017

(x,y) =(a,7)
x= a
y= 7

5x-y=8
By substituting the value of y
5x-7 =8
5x=15
x= 3

As x = a=3
So, a =3

Answer Link

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