Quadratics

Answer the following questions
Quiz by katetoni
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Last updated: June 16, 2020
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First submittedJune 16, 2020
Times taken38
Average score60.0%
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1. What does a negative discriminate mean?
The parabola will curve down
The parabola does not have x-intercepts
The y-intercept is a negetvie
The parabola is a straight line
2. What methods can you use to solve and or factorise quadratic equations?
Quadratic Formula
All of the above
Completing the square
PSN
3. What causes the parabola to curve down?
x-intercepts are too close
A negative constant in the first term (standard from), e.g x to the highest index
A positive constant in the first term (standard from), e.g x to the highest index
There are too many x-intercepts
4. What formula is used to find the horizontal axis of symmetry?
Gradient Formula
Cosine Rule
Average Formula
Area Formula
5. How is the vertical axis of symmetry found?
Guesswork
Substitution of the horizontal axis of symmetry in to the quadratic equation
Simultaneous equations
It is the c term in a standard equation, ax^2+bx+c=0
6. What is the most simple way of factorising x^2-26x+169?
All are equal in steps and complexity
Completing the square
PSN method
Quadratic formula
7. How is the y-intercept found?
Making y value to zero
Find the axis of symmetry and half it
Making x value to zero
8. What is a name for this expression x^5-4x^4-8x^3+6x^2+12w-7?
Quadratic equation
Monic expression
Sixth order polynomial
Fifth order polynomial
9. How do you find the intersection point of two parabolas?
Combining the equations
Simultaneous Equations
Simultaneous Equations and Combining the equations
Finding the average of the two axes
10. What is the formula completing the square is based off?
1/2ab
squareroot of b^2-4ac
(a+b)^2=a^2+2ab+b^2
a+b/2c
1 Comments
+1
Level 51
Oct 23, 2022
Nice Quiz - Stan