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Quadratics
Answer the following questions
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Last updated: June 16, 2020
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| First submitted | June 16, 2020 |
| Times taken | 61 |
| Average score | 50.0% | Report this quiz | Report |
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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?
Completing the square
PSN
Quadratic Formula
All of the above
3. What causes the parabola to curve down?
There are too many x-intercepts
A positive constant in the first term (standard from), e.g x to the highest index
x-intercepts are too close
A negative constant in the first term (standard from), e.g x to the highest index
4. What formula is used to find the horizontal axis of symmetry?
Gradient Formula
Area Formula
Cosine Rule
Average Formula
5. How is the vertical axis of symmetry found?
It is the c term in a standard equation, ax^2+bx+c=0
Guesswork
Simultaneous equations
Substitution of the horizontal axis of symmetry in to the quadratic equation
6. What is the most simple way of factorising x^2-26x+169?
All are equal in steps and complexity
Completing the square
Quadratic formula
PSN method
7. How is the y-intercept found?
Find the axis of symmetry and half it
Making x value to zero
Making y value to zero
8. What is a name for this expression
x^5-4x^4-8x^3+6x^2+12w-7?
Quadratic equation
Fifth order polynomial
Monic expression
Sixth order polynomial
9. How do you find the intersection point of two parabolas?
Simultaneous Equations and Combining the equations
Combining the equations
Simultaneous 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/2c
(a+b)^2=a^2+2ab+b^2
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1 Comments
cammyandkate
+1
Level 56
Oct 23, 2022
Nice Quiz - Stan
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