Unit Test — Unit test

Question 1

three

Revolt · Accepted Answer

The vertex of the function is at (–3,–16).; The graph is increasing on the interval x > –3.; The graph is positive only on the intervals where x 1.

Question 2

Consider the quadratic function f(x) = x2 – 8x – 4. What is the value of the leading coefficient?

Revolt · Accepted Answer

1

Question 3

The graph of the function f(x) = (x + 2)(x − 4) is shown.

Revolt · Accepted Answer

all real values of x where 1 < x < 4

Question 4

Which function has a vertex on the y-axis?

Revolt · Accepted Answer

f(x) = (x – 2)(x + 2)

Question 5

What is the range of the function f(x) = −(x + 3)2 + 7?

Revolt · Accepted Answer

all real numbers less than or equal to 7

Question 6

What is the y-value of the vertex of the function f(x)=−(x−3)(x+11)?

Revolt · Accepted Answer

49

Question 7

What is the y-value of the vertex of the function f(x)=−(x+8)(x−14)?

Revolt · Accepted Answer

121

Question 8

On a coordinate plane, a parabola opens up. It goes through (negative 3.25, 5), has a vertex of (1.7, negative 2.75), and goes through (6.25, 5). Solid circles appear on the parabola at (negative 3, 4), (0, negative 2), (1.5, negative 2.75), (3, negative 2), (6, 4).

Revolt · Accepted Answer

2

Question 9

Jan'ai was asked to determine the minimum for a function with zeros located at –1 and 5, which also has a y-intercept of (0, –25). Her work is shown.Which best describes the first error in Jan'ai's work?

Revolt · Accepted Answer

She incorrectly determined the x-coordinate of the vertex.

Question 10

On a coordinate plane, a parabola opens up. It goes through (negative 3.25, 5), has a vertex of (1.75, negative 2.75), and goes through (6.25, 5). Solid circles appear on the parabola at (negative 3, 4), (0, negative 2), (1.75, negative 2.75), (3, negative 2), (6, 4).

Revolt · Accepted Answer

4

Unit Test — Unit test Answers

More from this Course

TRY EDGENUITY HACKS