Long quiz (Math 9)

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50 questions
• Q1

What refers to a function that describes a polynomial equation of degree 2?

Quartic Function

Linear Function

Cubic Function

30s
• Q2

A perfect square trinomial is a trinomial in the form _________.

$a^2-ab-b^2$

$a^2+2ab+b^2$

$a^2+ab+b^2$

$a^2+b^2$

30s
• Q3

Whichof the following is the quadratic formula?

$\frac\left\{-b\pm\sqrt\left\{b^2-4ac\right\}\right\}\left\{2a\right\}$

$\frac\left\{b\pm\sqrt\left\{b^2-4ac\right\}\right\}\left\{2a\right\}$

$\frac\left\{-b-\sqrt\left\{b^2-4ac\right\}\right\}\left\{2a\right\}$

$\frac\left\{-b+\sqrt\left\{b^2-4ac\right\}\right\}\left\{2a\right\}$

30s
• Q4

In a quadratic equation, the expression b2 -4ac is called _________.

discrimination

discipline

discriminant

disciple

30s
• Q5

What formula will you use if you want to get the sum of the roots of a quadratic equation?

$\frac\left\{b\right\}\left\{a\right\}$

$-\frac\left\{b\right\}\left\{a\right\}$

$\frac\left\{c\right\}\left\{a\right\}$

$-\frac\left\{c\right\}\left\{a\right\}$

30s
• Q6

The product of two consecutive even integers is 120. The first integer is 10, what is the second integer?

14

8

12

11

30s
• Q7

Which of the following is being used to indicate inequality?

<

$\perp$

$=$

$\approx$

30s
• Q8

In graphing the solution set of quadratic inequalities, what kind of circle will be used if the given inequality symbol is less than (  ?

open circle

big circle

red circle

30s
• Q9

In a quadratic function, what variable is the independent variable?

f(x)

a variable

x variable

y variable

30s
• Q10

What is the graph of a quadratic function?

Zigzag line

Circle

Parabola

Straight line

30s
• Q11

What is the highest or lowest point doe the parabola reach?

symmetry

axis

intercepts

vertex

30s
• Q12

What do you call the line that divides the parabola into two equal parts?

axis of symmetry

axis

vertex

intercepts

30s
• Q13

In f(x) = ax2 + bx + c, ifa > 0, the parabola opens________.

downward

upward

to the right

to the left

30s
• Q14

In f(x) = ax2 + bx + c, if a < 0, the parabola opens ________.

downward

to the right

upward

to the left

30s
• Q15

In the equation y = a(x – h)2 + k, what are the coordinates of the vertex of the parabola?

(x,k)

(h,k)

(x,h)

(x,y)

30s

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