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Equations
Terminology
Factorising
General
100
Complete the equation, Y=ax^2 + bx +
What is 'C'
100
What is the name of the 'U' shaped graph produced by a quadratic equation?
Parabola
100
What letter always appears first in the brackets when you factorise an equation?
What is 'X'
100
The letter that represents the Y intercept is?
What is 'C'
200
What do we call the equation that produces a straight line on a cartesian plane?
What is linear?
200
A parabola that opens down is called?
What is convex.
200
The purpose of factorising is to find the (what) intercepts?
What is 'X'
200
What part of the quadratic equation is responsible for producing the parabola?
What is, the squared value.
300
A positive 'b' value will move the parabola to the left or to the right of the origin.
What is left.
300
The process of replacing the x, or y co-ordinate with a number is called?
What is substitution.
300
Which is the factored form of y=x^2 + 9x + 20? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .a) (x + 6)(x + 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .b) (x + 4)(x + 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .c) (x + 8)(x + 1)
What is b)
300
Which of the co-ordinates always appears first an ordered pair?
What is 'X'.
400
An equation with a negative 'a' value will be convex (open down) or concave (open up)?
What is convex?
400
What word starting with the letter 'e', is the opposite of factorising?
What is expanding.
400
Which of the following is the factored form of y=x^2 - 8x + 12? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . a) (x + 2)(x + 6). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . b) (x + 3)(x - 5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . c) (x - 6)(x - 2)
What is c).
400
Answer yes or no. A quadratic known as a perfect square will cross the x-axis.
What is no.