Question

Which graph represents y= sqrtx-4

Answer 1

B

Explanation:

The given equation is :

`y=\sqrt {x-4}`

This is a equation of a half parabola because general equation of a parabola with its as x-axis is:

`y^2={x-a}`

Where a is the vertex of the parabola. If square root is taken, then there will be one positive and one negative. So,

The positive represents the upper side of the parabola.

Hence,
`y=\sqrt {x-4}` represents upper parabola with x -axis is its axis and vertex at (4,0). Option B is correct.

Answer 2

B

Explanation:

The function is

`y=√(x-4)`

use the graph tool to visualize the graph as below