Question

For the function f(x) = –(x + 1)2 + 4, identify the vertex, domain, and range.

Answer 1

The vertex is (–1, 4), the domain is all real numbers, and the range is y ≥ 4.
The vertex is (–1, 4), the domain is all real numbers, and the range is y ≤ 4.-my answer
The vertex is (1, 4), the domain is all real numbers, and the range is y ≥ 4.
The vertex is (1, 4), the domain is all real numbers, and the range is y ≤ 4.

Answer 2

need help want to make sure if im correct

Answer 3

ok what are you thinking?

Answer 4

b

Answer 5

thats right

Answer 6

thank you so much can help make sure I have 3more problems correct

Answer 7

ok

Answer 8

What is the equation of the following graph in vertex form?

parabolic function going down from the left through the point negative four comma zero and turning at the point negative three comma negative one and going up through the point negative two comma zero and then through the point zero comma eight and continuing up towards infinity

Answer 9

Courtesy of Texas Instruments
y = (x − 3)2 − 1
y = (x + 3)2 − 1
y = (x − 4)2 − 2-my answer
y = (x − 4)2 + 8

Answer 10

next time just type the numbers please. it's a lot easier to decipher.
If it turns at (-3, -1) that's the vertex, so it should be the 2nd choice

Answer 11

im so sorry

Answer 12

no problem

Answer 13

Given the function f(x) = x2 and k = –1, which of the following represents a function opening downward?

Answer 14

f(x) + k-my answer
kf(x)
f(x + k)
f(kx)

Answer 15

f(x)+k moves the function down k units. You want the one that makes -1*f(x)

Answer 16

so D

Answer 17

b

Answer 18

MMM o ok

Answer 19

0
1
–1 -my answer
–2

Answer 20

what's the question?

Answer 21

alculate the average rate of change for the given graph from x = –2 to x = 0

Answer 22

rate of change just means slope.
\[m=\frac{ y_2-y_1 }{ x_2-x_1 }\]

Answer 23

plug the two points into the equation

Answer 24

-2

Answer 25

well its between -2 nd 0