Site map
Math Tests
Math Lessons
Math Formulas
Online Calculators
Math Calculators, Lessons and Formulas
It is time to solve your math problem
mathportal.org
Math Tests
Math Lessons
Math Formulas
Online Calculators
Quadratic Equations, Inequalities, and Functions
Quadratic function and discriminant
Graphing quadratic function
Graphing quadratic function
ans:
syntax error
C
DEL
ANS
±
(
)
÷
×
7
8
9
–
4
5
6
+
1
2
3
=
0
.
auto next question
evaluate answers
calculator
Question 1:
1 pts
The equation of quadratic function which graph is shown in the figure at the right is:
$f(x)=-x^2$
$f(x)=x^2$
$f(x)=-{(x+1)}^2$
$f(x)={(x+1)}^2$
Question 2:
1 pts
The equation of quadratic function which graph is shown in the figure at the right is:
$f(x)=x^2+1$
$f(x)=x^2-1$
$f(x)=-x^2+1$
$f(x)=-x^2-1$
Question 3:
1 pts
The graph of quadratic function $f(x)=-21x^2+14x-23$ opens downward.
Question 4:
2 pts
Graphs of functions $f(x) = x^2$ and $g(x)={\frac12}x^2$ are shown at the right. Which of the following is correct?
blue line is a graph of $f(x)$
blue line is a graph of $g(x)$
Question 5:
2 pts
Graphs of functions $f(x)=0.23x^2-1.3x$ and $g(x)=-0.53x^2+2x$ are shown at the right. Which of the following is correct?
blue line is a graph of $f(x)$
blue line is a graph of $g(x)$
Question 6:
2 pts
Which of the following graphs represent $f(x)=x^2-3x$ ?
blue graph
red graph
Question 7:
2 pts
Consider a graph of the function $f(x)=ax^2+bx+c$ shown at the right. Which of the following statements is true?
$a>0$
$a<0$
the sign of $a$ cannot be determined
Question 8:
2 pts
Consider a graph of the function $f(x)=ax^2+bx+c$ shown at the right. Which of the following statements is true?
$a>0$
$a<0$
the sign of $a$ cannot be determined
Question 9:
3 pts
Consider a graph of the function $f(x)=ax^2+bx+c$ shown at the right. Which of the following statements is true?
$a>0$ $c>0$
$a>0$ $c<0$
$a<0$ $c>0$
$a<0$ $c<0$
Question 10:
3 pts
Consider a graph of the function $f(x)=ax^2+bx+c$ shown at the right. Which of the following statements is true?
$a<0$ $c=2$
$a>0$ $c=2$
$a<0$ $c=1$
$a>0$ $c=1$
Question 11:
3 pts
Which of the following graphs represent $f(x)={\frac12}x^2-2x+1$ ?
red graph
blue graph
green graph
Question 12:
3 pts
Which of the following graphs represent $f(x)=-{(x+2)}^2$ ?
red graph
blue graph
green graph
Question 13:
3 pts
What is the equation of the function with graph at the left?
$f(x)=(x-1)(x+2)$
$f(x)=(x+1)(x-2)$
$f(x)=1/2(x-1)(x+2)$
$f(x)=1/2(x+1)(x-2)$
submit test
Pre-algebra
Polynomials
Linear equations
Quadratic equations
Radicals
Exponents and Logarithms
Trigonometry
Algebra 2
Geometry
Solid Figures
Solving quadratic equations
Solving by square root
Completing the square
Quadratic formula
Graphing function and discriminant
Graphing quadratic function
Discriminant of a quadratic equation