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