Question

What is the domain and range of the quadratic equation y = –3(x – 10)2 + 5?
Answers







A)Domain: All Real Numbers
Range: y 10








B)Domain: All Real Numbers
Range: y 10








C)Domain: All Real Numbers
Range: y 5








D)Domain: All Real Numbers
Range: y 5

which one is the answer A,B,D,C ?

Answer 1

you mean y^2??

Answer 2

Is anyone helping you with these @lilmagda105 ?

Answer 3

nope

Answer 4

I wish I had the time to help you, but I don't

Answer 5

i can help

Answer 6

do you know why I needed the vertex?

Answer 7

hello?

Answer 8

yes

Answer 9

less then or greater than goes with the answers

Answer 10

I will only do the first one:\[f(x)=-3(x-10)^2+5\]has a domain of \(\mathbb{R}\) and a range of\[f'(x)=-6(x-10)\to-6(x-10)=0\implies x=10\to f(10)=5\]\[\implies(-\infty, 5].\]

Answer 11

sorry @across is right (10, 5) is your vertex.

Answer 12

okay so the domain is all real numbers & the range is y is greater then 5 correct ?

Answer 13

No.

Answer 14

The range is \(y\leq5\).

Answer 15

ohh thats what i was trying to say lol how do you use the equation symbols ?

Answer 16

Enclose them in either \.(\) or \.[\], without the dot.

Answer 17

That one up there, for example, is \.(y\leq5\) (again, without the dot).

Answer 18

okay thanks