# Definitions Flashcards

1
Q

Definition:

Proportion

A

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

2
Q

Definition:
Direct proportion

A

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.

3
Q

Command Word:

Solve

A

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

4
Q

Definition:

Constant of proportionality

A

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)

5
Q

Definition:

Proportional Expression

A

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)

6
Q

Definition:

Square

A

to multiply a number by itself

7
Q

Definition:

Cubic Graph

A

Graphs that has a cubed x in the equation

8
Q

Definition:

Inverse Proportion

A

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.

9
Q

Definition:

Inverse

A

the opposite/reverse of something

10
Q

Command Word:

Evaluate

A

11
Q

Definition:
Indicies

A

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

12
Q

Definitions:
Exponential Graphs

A

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

13
Q

Command Word:

Sketch the graph

A

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

• intercepts (x and y axis)
• turning points
14
Q

Definition:

Area

A

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

15
Q

Definition:
Trapezium

A

A quadrilateral with one pair of parallel sides

16
Q

Definition:

A

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

17
Q

Definition:

Tangent (graph)

A

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

18
Q

Definition:
Non-linear graphs

A

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

19
Q

Definition:
Translation

A

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.

20
Q

Definition:

Function Notation

A

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

21
Q

Definitions:

Transformations

A

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)
22
Q

Definition:
Parallel

A

Lines are parallel if they are straight and never touch

23
Q

Definition:
Curve

A

Non straight lines

24
Q

Definition:

Reflections

A

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

25
Q

Definition:
Stretch

A

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.