Question

What are Graphs of Square Root Functions?

Answer 1

you have half of a parabola.

Consider `y = sqrt x`

`x = 0 => y = 0`
`x = 1 => y =1`
`x = 4 => y = 2`
`x = 9 => y = 3`
`x = -1 =>` Undefined in `RR`

You have upper part of a parabola that opens to the right

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If you consider `y = -sqrt x`

You have the lower part of a parabola that opens to the right.

`sqrt y = x` and `-sqrt y = x` behaves similarly