Keep scrolling down for answers and more stats ...
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?
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?
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
✓
6.
What is the most simple way of factorising x^2-26x+169?
All are equal in steps and complexity
✓
7.
How is the y-intercept found?
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?
9.
How do you find the intersection point of two parabolas?
Combining the 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?