Question

For the parent function y= square root x , what effect does a value of k = -3 have on the graph?

A. Horizontal shift of 3 units to the right
B. Horizontal shift of 3 units to the left
C. Vertical shift of 3 units up
D. Vertical shift of 3 units down

Answer 1

@Mertsj

Answer 2

\[f(x)=\sqrt x\]

Where do you see a k

Answer 3

after the square root right?

Answer 4

I think the point is that you are asking what effect a certain k value will have on the graph and no one has any idea because there is no k in the equation.

Answer 5

Is this the form we're suppose to use perhaps?
\[\large f(x)=\sqrt{x-h}+k\]

Which would shift the vertex of the parabola to \(\large (h,k)\).

Answer 6

parabola?

Answer 7

Woops :) lol ty

Answer 8

Head... still.. asleeps =_=

Answer 9

@zepdrix you're almost as bad as I am. lol

Answer 10

Blah not parabola, but the idea still holds.
It would shift the..... base point? or whatever.. of the root over to \(\large (h,k)\)

Answer 11

The K is shifting the function UP or DOWN.
Since it's negative, it will shift it downward.

Yah... something like that -_-

Answer 12

Yea, K shifts it vertically and H shifts it horizontally.

Answer 13

Yea, K shifts it vertically and H shifts it horizontally.