When f (x) = - 3, what is x?

We want the values of

x

that give a

y

value greater than 0.

Step-by-step explanation:

Let's say that

f

(

x

)

=

x

2

-

10

The graph below shows

y

=

f

(

x

)

:

graph{x^2-10 [-6, 6, - 15, 15]}

When we want

f

(

x

)

>

0

, we want

y

>

0

, or all the values of

x

where

f

(

x

)

>

0

.

In this instance,

x

2

-

10

>

0

x

2

>

10

x

>

√

10

x

<

-

√

10

We want the values of x that give a y value greater than 0.