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Quadratic Graphs
Quiz 1
Quiz 2
Quiz 3
Questions
right first
attempt
right
wrong
MathQuiz 4.2
University of Sydney
School of Mathematics
and Statistics
© Copyright 2004
Quadratic graphs  Quiz 1.
Question
Question 1
Which of the following graphs represent
a)
b)
c)
d)
Not correct. Choice
(a)
is
false
.
Try again, this is the line
Not correct. Choice
(b)
is
false
.
Try again, this is the graph of the equation
Your answer is correct.
so it is concave up and passes through
and
Not correct. Choice
(d)
is
false
.
Try again, this graph is concave down.
Question 2
Which of the following graphs represent
a)
b)
c)
d)
Not correct. Choice
(a)
is
false
.
Try again, this is
Your answer is correct.
so it is concave down and passes through
and
Not correct. Choice
(c)
is
false
.
Try again, this is
Not correct. Choice
(d)
is
false
.
Try again, this is
Question 3
Consider the graph of
below.
Which of the following statements about the graph is true?
a)
The graph has a minimum and the
coefficient of
is negative.
b)
The graph has a maximum and the coefficient of
is negative.
c)
The graph has a maximum and
the coefficient of
is positive.
d)
The graph has a minimum and the coefficient of
is positive.
Not correct. Choice
(a)
is
false
.
Try again, the graph does have a minimum but you have
the coefficient wrong.
Not correct. Choice
(b)
is
false
.
Try again, the graph does not have a maximum.
Not correct. Choice
(c)
is
false
.
Try again, if the graph has a maximum then
must be negative.
Your answer is correct.
The graph is concave up so it has a minimum and
is positive.
Question 4
Consider the graph of
below.
Which of the following statements about the coefficients
and
is true?
a)
b)
c)
d)
Not correct. Choice
(a)
is
false
.
Try again, you have the minimum not the
intercept for
Your answer is correct.
The
intercept is 2 so
and the parabola is concave
up so
Not correct. Choice
(c)
is
false
.
Try again, you have the wrong concavity.
Not correct. Choice
(d)
is
false
.
Try again, you have the wrong concavity and the wrong intercept.
Question 5
Which of the following graphs represents
where
and
a)
1 and 4.
b)
1 and 2.
c)
2 and 3.
d)
3 and 4.
Your answer is correct.
Correct. All of the graphs have
but only 1 and 4 are concave down, as required.
Not correct. Choice
(b)
is
false
.
Try again, 1 has
but 2 has
Not correct. Choice
(c)
is
false
.
Try again, 2 and 3 both have
Not correct. Choice
(d)
is
false
.
Try again, 3 has