Definitions

Question 1

Definition:

Proportion

Answer 1

Proportion is used to show how quantities and amounts are related to each other

Question 2

Definition:
Direct proportion

Answer 2

There is a direct proportion between two values when one is a multiple of the other.

This means as one value increases so does the other, and if one value decreases so does the other.

Question 3

Command Word:

Solve

Answer 3

Find the value of the unknown value/letter (often x)

Question 4

Definition:

Constant of proportionality

Answer 4

Two values in proportion will always have a constant value that links them, we often label this k (and you will need to find it)

(think of this as the hourly rate)

Question 5

Definition:

Proportional Expression

Answer 5

When two things are in proportion we can form an expression to show this, we have a special symbol for this (the one that looks like a fish)

Question 6

Definition:

Square

Answer 6

to multiply a number by itself

Question 7

Definition:

Cubic Graph

Answer 7

Graphs that has a cubed x in the equation

Question 8

Definition:

Inverse Proportion

Answer 8

There is a inverse proportion between two values when they change in opposite directions.

This means as one value increases the other decreases , and if one value decreases the other increases.

Question 9

Definition:

Inverse

Answer 9

the opposite/reverse of something

Question 10

Command Word:

Evaluate

Answer 10

Find the numerical value/answer

Question 11

Definition:
Indicies

Answer 11

Another name for powers, when we are dealing with multiple multiplications of a number

Question 12

Definitions:
Exponential Graphs

Answer 12

Graphs where the equation is a number to the power of x

Question 13

Command Word:

Sketch the graph

Answer 13

Draw a rough shape of the graph and label key points like:

• intercepts (x and y axis)
• turning points

Question 14

Definition:

Area

Answer 14

The amount of space inside a 2D shape units cm squared

Question 15

Definition:
Trapezium

Answer 15

A quadrilateral with one pair of parallel sides

Question 16

Definition:
Gradient

Answer 16

The rate of change, how step the line in the graph is.

Question 17

Definition:

Tangent (graph)

Answer 17

The tangent line to a curve at a given point is the straight line that “just touches” the curve at that point.

Question 18

Definition:
Non-linear graphs

Answer 18

Linear graphs are of the form y=mx+c, where the only power of x is one

So any graph that has a different power for x in non linear

Question 19

Definition:
Translation

Answer 19

A translation moves a shape up, down or from side to side but it does not change its appearance in any other way. Translation is an example of a transformation.

Question 20

Definition:

Function Notation

Answer 20

Displays the function as an expression that gives you the direction to find the output

Question 21

Definitions:

Transformations

Answer 21

Are processes to move or resize a shape. These include:

• translations (move the shape)
• rotation (spin the shape)
• reflection (flip the shape over)
• enlargement (change the size)

Question 22

Definition:
Parallel

Answer 22

Lines are parallel if they are straight and never touch

Question 23

Definition:
Curve

Answer 23

Non straight lines

Question 24

Definition:

Reflections

Answer 24

Using a line of reflection (mirror line) you can flip a shape so that each point is still the same distance from the line

Question 25

Definition:
Stretch

Answer 25

If a figure is enlarged (or reduced) in only one direction, the change is referred to as a stretch. In a stretch, the figure is distorted, and is not necessarily similar to the original figure.