Question

Plz answer quick, i only have 15 minutes!!!!!!!!!!!!!!!!!!!!
Use the graphing calculator to graph the function f(x) = - sqrt x. Which list contains three points that lie on the graph of the function?

A - (–9, 3), (–4, 2), (–1,1)
B - (1,1), (4, 2), (9, 3)
C - (–9, –3), (–4, –2), (–1,–1)
D - (1,–1), (4, –2), (9, –3)

Answer 1

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OPTION (C) IS CORRECT

Answer 2

Answer:

D - (1,–1), (4, –2), (9, –3)

Step-by-step explanation:

Given function,

$f(x) = -\sqrt{x}$

Since, a point will lie in the graph of the function,

If the point satisfies the equation of the function.

Also, negative number under the square root can not be the input of the function.

That is, OPTIONS A and B can not be the answer.

Now, for (1, 1),

$f(1) = -\sqrt{1}=-1\neq 1$

Thus, (1, 1) does not satisfies the function,

⇒ OPTION B can not be the answer.

For (1, -1)

$f(1) = -\sqrt{1}=-1$

For (4, -2)

$f(4) = -\sqrt{4}=-2$

For (9, -3)

$f(9) = -\sqrt{9}=-3$

Hence, OPTION D is correct.