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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 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
Completing the square
PSN
All of the above
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
Average Formula
Cosine Rule
Area Formula
5. How is the vertical axis of symmetry found?
Substitution of the horizontal axis of symmetry in to the quadratic equation
It is the c term in a standard equation, ax^2+bx+c=0
Guesswork
Simultaneous equations
6. What is the most simple way of factorising x^2-26x+169?
PSN method
Quadratic formula
Completing the square
All are equal in steps and complexity
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?
Fifth order polynomial
Quadratic equation
Monic expression
Sixth order polynomial
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?
squareroot of b^2-4ac
1/2ab
(a+b)^2=a^2+2ab+b^2
a+b/2c
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1 Comments
cammyandkate
+1
Level 56
Oct 23, 2022
Nice Quiz - Stan
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