Quiz about QF.1 exit slip

Question 1

Which is a quadratic function?

Accepted Answer

$$3x^2+y=5$$

Answer

$$3x+y^2=5$$

Answer

$$y=3x+5$$

Answer

$$y=27-x^3$$

Question 2

Which function has a graph that opens downward?

Accepted Answer

$$-y=x^2+1$$

Answer

$$-x^2+y=0$$

Answer

$$x^2-y=0$$

Answer

$$y=x^2-1$$

Question 3

What is the vertex of this parabola?

Accepted Answer

$$\left(-1,-4\right)$$

Answer

$$\left(-3,0\right)$$

Answer

$$\left(-4,-1\right)$$

Answer

$$\left(1,0\right)$$

Question 4

What is the domain of this parabola?

Accepted Answer

all real numbers

Answer

$$y\le4$$

Answer

$$x\le4$$

Answer

$$x>-3$$

Question 5

What is the range of this parabola?

Accepted Answer

$$y\le4$$

Answer

$$y<4$$

Answer

$$y\ge4$$

Answer

all real numbers

Question 6

Does this table represent a quadratic function?

Accepted Answer

yes

Answer

no

Answer

not enough information

Question 7

Using the quadratic function shown below, what is the missing value in the table? $$y=2x^2-4$$

Accepted Answer

$$4$$

Answer

$$-12$$

Answer

$$12$$

Answer

$$-4$$

Question 8

Which equation is in standard form for a quadratic function?

Accepted Answer

$$y=4x^2-3x+\frac{2}{3}$$

Answer

$$3x+y=4x^2+\frac{2}{3}$$

Answer

$$y=\frac{2}{3}-3x+4x^2$$

Answer

$$4x^2-3x+\frac{2}{3}-y=0$$

Question 9

Does this quadratic function have a maximum or a minimum? $$f\left(x\right)=-4x^2-x+1$$

Accepted Answer

maximum

Answer

minimum

Answer

neither, it is not a quadratic function

Question 10

Given a quadratic function in standard form, which coefficient tells you whether the parabola opens up or down? $$y=ax^2+bx+c$$

Accepted Answer

$$a$$

Answer

$$b$$

Answer

$$c$$

Answer

$$y$$

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