Math by Kahoot! – Functions

Question 1

Which statement is true of ALL functions?

For every x there is only one y. For every y there is only one x. For every output, there is only one input. For every input, there is only one output.

Question 2

Which set of ordered pairs represents y as a function of x?

Set A Set B Set C

Question 3

Which statement best describes the relation represented by the mapping?

Each x corresponds to exactly one y, so this IS a function. Each y corresponds to exactly one x, so this IS a function. This ISN'T a function. There are more x-values than y-values This ISN'T a function. Two x-values have the same y-value.

Question 4

The points in the table all lie on the same line. What is the slope of this line?

2 0.5 ½ 10

Question 5

The points in the table all lie on the same line. What is the y-intercept of this line?

0 2 10 ½

Question 6

Which statement about the graphed line is TRUE?

The slope is 1 and the y-intercept is 1 The slope is 1 and the y-intercept is −1 The slope is −1 and the y-intercept is 1 The slope is −1 and the y-intercept is −1

Question 7

Write 6 x 6 x 6 x 6 using an exponent.

6^3 3^6 6^4 4^6

Question 8

Write 7^5 as a product of the same factor.

7 x 7 x 7 x 7 x 7 x 7 7 x 7 x 7 x 7 x 7 5 x 5 x 5 x 5 x 5 5 x 5 x 5 x 5 x 5 x 5 x 5

Question 9

Sue earned 8^3 dollars babysitting last week. How much money did she earn?

$128 $64 $24 $512

Question 10

Solve.

8.4 9.261 18.522 19.4481

Question 11

Rewrite using an exponent.

7^9 7^7 7^8 8^7

Question 12

The graph of f(x) = −2x² + 4x − 1 is a parabola opening

downward. upward.

Question 13

A quadratic function has a maximum value of 5. Which could be the equation of the function?

f(x) = −2(x − 5)² − 2 f(x) = −(x + 1)² + 5 f(x) = (x − 2)² + 5

Question 14

What are the x-intercepts of the graph of f(x) = x² − 3x − 10?

(2, 0) and (5, 0) (2, 0) and (−5, 0) (−2, 0) and (5, 0) (−2, 0) and (−5, 0)

Question 15

Which expression is the discriminant of the equation ax² + bx + c = 0?

b − 4ac −b + 4ac b² − 4ac b² + 4ac

Question 16

What is the value of the discriminant in 3x² + 4x − 8 = 0?

−80 80 96 112

Question 17

What does the discriminant of x² − 3x + 5 = 0 tell you about the roots of the equation?

The roots are non-real numbers. There are two rational roots. There are two irrational roots. There is a double root.

Question 18

The graph of y = f (x) is translated 2 units up. What function represents the new graph?

y = f (x) + 2 y = f (x) − 2 y = f (x + 2) y = f (x – 2)

Question 19

The graph of f (x)=x² is translated 2 units to the right. What is the vertex of the new graph?

(0, –2) (0, 2) (–2, 0) (2, 0)

Question 20

The graph of f (x)= 2x² is reflected over the x–axis. What is the new graph’s axis of symmetry?

y = 0 x = 2 x = 0 x = –2

Question 21

How many solutions does the system graphed below have?

2 3 4 6

Question 22

How many solutions does the system shown below have?

0 1 2

Question 23

What are the solutions to the system graphed below?

(–6, 0) and (0, 0) (–2, 4) and (3, 9) (0, 0) and (0, 6)

Question 24

What are the solutions to the system shown below?

(0, 0) and (–1, 0) (0, 1) and (1, 0) (0, 1) and (–1, 0)

Question 25

What are the ?-values of the solutions to the system shown below?

0 only −√12 and √12 –4 and 3 –3 and 4

Question 26

How should the equation −5x² = 6x − 1 be rewritten before applying the quadratic formula?

5x² − 6x − 1 = 0 5x² − 6x + 1 = 0 5x² + 6x − 1 = 0 5x² + 6x + 1 = 0

Question 27

What are the solutions to x² + 2x − 5 = 0?

x = −1 ±√6 x = −1 ±√12 x = −1 ±√24 There is no real solution.

Question 28

When you use the quadratic formula to solve a quadratic equation, what is true?

It always yields rational solutions. It always yields irrational solutions. It always yields 2 real solutions. It always yields 0, 1, or 2 real solutions.

Question 29

What is the vertex of the graph of f(x) = 2(x + 3)² + 2?

(3, 2) (−3, 2) (3, −2) (−3, −2)

Question 30

What is the y-intercept of the graph of f(x) = 2(x + 3)² + 2?

(0, 2) (0, 18) (0, 20) (0, 38)

Question 31

What are the x-intercepts of the graph of f(x) = 2(x + 3)² + 2?

(0, 20) only (2, 0) and (4, 0) (−2, 0) and (−4, 0) There are no x-intercepts.

Question 32

What is the degree of the polynomial, 5?⁴ + ?² + 7?

3 4 5 7

Question 33

Which rational function has a horizontal asymptote at ? = 0?

? = 3?³/(?³ + 4) ? = (?³ + 1)/(3?²) ? = (?² – ?)/(?² + ?) ? = (?² + 9)/(?³ + 8)

Question 34

p(x) and q(x) are polynomials with no common factors. The number of vertical asymptotes of y is

always the degree of p(x). always the degree of q(x). less than or equal to the degree of q(x). the degree of q(x) minus the degree of p(x).

Math by Kahoot! – Functions

Math 8: Identify Functions – MATH

Math 8: Determine Slope and y-intercept from a Graph or Table – MATH

Functions and Equations: Expressions – Exponents

Quadratics: Match quadratic functions and graphs

Using the discriminant: Solutions to quadratic equations

Describe the transformations of a quadratic function

Algebra: Systems of Linear and Quadratic Equations

Solve a quadratic equation using the quadratic formula

Graph quadratic functions in vertex form

Rational Functions: Asymptotes and Excluded Values

Math by Kahoot! – Functions

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