4 years ago

What must be the value of x if (x,4) lies on the line 3x +y = 10

1 answer:

7 0

If (x, 4) lies on the line 3x+y=10, we can just substitute the values in
x=x and 4=y
3x+4= 10
Subtract 4 from each side
3x= 6
Divide by 3 on each side
x=2
so the x in (x,4) must be 2

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