Long quiz (Math 9)

Quiz by Noel Padron

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- Q1
What refers to a function that describes a polynomial equation of degree 2?

Quadratic Function

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?

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

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

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

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

30s - Q4
In a quadratic equation, the expression b

^{2}-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?

$\backslash frac\{b\}\{a\}$

$-\backslash frac\{b\}\{a\}$

$\backslash frac\{c\}\{a\}$

$-\backslash frac\{c\}\{a\}$

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?

<

$\backslash perp$

$=$

$\backslash approx$

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 ( ?

shaded circle

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) = ax

^{2}+ bx + c, ifa > 0, the parabola opens________.downward

upward

to the right

to the left

30s - Q14
In f(x) = ax

^{2}+ 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