Which equation is a linear function? y = x^(2) + 7 , y = (2)/(x) + 3 , y + x^(2) - 1 , y = (x)/(2) - 5

Question

Which equation is a linear function?

y =
`x^(2)` + 7

, y =
`(2)/(x)` + 3

, y +
`x^(2)` - 1

, y =
`(x)/(2)` - 5

Answer 1

X/2 -5 is the only linear function