Question

what is the domain of 5 - (x+20)^2

Answer 1

Because x can equal any real number, the answer is all real numbers.

Answer 2

thank you find the x and y intercepts

Answer 3

>_> Write the whole problem. Right now there is no y.

Answer 4

f(x) = 5 - (x + 20)^2

Answer 5

f(x) is the same as writing y.

So, y= 5- (x+20)^2

Now, what is the value of y on the x-axis?

Answer 6

idk. it just says that y=f(x) in the xy plane

Answer 7

1. Make a graph.
2. Look at the x-axis
3. What is the value of y at any point on the x-axis?

Answer 8

well, I know it's a parabola and that the vertex is -20, 5

Answer 9

>_>

On the x-axis, y = 0
On the y-axis, x=0

So to find the x intercept, we set y = 0
To find the y intercept, we set x = 0

Tell me what you get for each after you have solved for both intercepts.

Answer 10

oh! y = -395

Answer 11

That's the y-intercept.
Find the x-intercept.

Answer 12

that's what I meant. finding the x intercept now

Answer 13

Hint: x-intercept(s)

Answer 14

yes, because it's a parabola, right?

Answer 15

I'm having difficulty with this. I know part of it is -20

Answer 16

what do I do with the 5?

Answer 17

I have (x+20)^2=5