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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 | 62 |
| Average score | 50.0% | Report this quiz | Report |
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1. What does a negative discriminate mean?
The y-intercept is a negetvie
The parabola does not have x-intercepts
The parabola will curve down
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
PSN
Completing the square
3. What causes the parabola to curve down?
There are too many x-intercepts
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
x-intercepts are too close
4. What formula is used to find the horizontal axis of symmetry?
Area Formula
Average Formula
Cosine Rule
Gradient Formula
5. How is the vertical axis of symmetry found?
It is the c term in a standard equation, ax^2+bx+c=0
Substitution of the horizontal axis of symmetry in to the quadratic equation
Simultaneous equations
Guesswork
6. What is the most simple way of factorising x^2-26x+169?
Completing the square
Quadratic formula
All are equal in steps and complexity
PSN method
7. How is the y-intercept found?
Find the axis of symmetry and half it
Making y value to zero
Making x value to zero
8. What is a name for this expression
x^5-4x^4-8x^3+6x^2+12w-7?
Sixth order polynomial
Fifth order polynomial
Monic expression
Quadratic equation
9. How do you find the intersection point of two parabolas?
Combining the equations
Finding the average of the two axes
Simultaneous Equations
Simultaneous Equations and Combining the equations
10. What is the formula completing the square is based off?
a+b/2c
1/2ab
squareroot of b^2-4ac
(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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