3.3.1
Plotting Graphs
Coordinates
Coordinates
Co-ordinates involve plotting an x (horizontal) co-ordinate and a y (vertical) co-ordinate.


Point (2,1)
Point (2,1)
- The point (2,1) has x-coordinate 2 and y-coordinate 1.


Axes
Axes
- The x-axis is the horizontal axis. On the x axis, the y co-ordinate is 0.
- The y-axis is the vertical axis. On the y axis, the x co-ordinate is 0.
Straight Line Graphs
Straight Line Graphs


Vertical lines
Vertical lines
- Vertical lines are written as:
- x = 2


Horizontal lines
Horizontal lines
- Horizontal lines are written as y = a:
- y = 1
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Straight lines through the origin
Straight lines through the origin
- Sloping lines are written as y = mx.
- m tells you the gradient of the line.
- If m is negative the graph slopes down from top left to bottom right.
- The larger m is, the steeper the slope of the line is.
1Numbers
1.1Integers
1.3Decimals
1.4Powers & Roots
1.5Set Language & Notation
1.6Percentages
1.7Ratio & Proportion
2Equations, Formulae & Identities
2.1Algebraic Manipulation
2.2Expressions & Formulae
2.3Linear Equations
2.4Quadratic Equations
2.5Proportion
3Sequences, Functions & Graphs
3.1Sequences
3.3Graphs
3.4Common Graphs
4Geometry
4.1Angles, Lines & Triangles
4.2Polygons
4.5Circle Properties
4.6Trigonometry & Pythagoras’ theorem
4.7Mensuration of 2D Shapes
4.83D Shapes & Volume
5Vectors & Transformation Geometry
6Statistics & Probability
6.1Statistical Measures
6.2Graphical Representation of Data
Jump to other topics
1Numbers
1.1Integers
1.3Decimals
1.4Powers & Roots
1.5Set Language & Notation
1.6Percentages
1.7Ratio & Proportion
2Equations, Formulae & Identities
2.1Algebraic Manipulation
2.2Expressions & Formulae
2.3Linear Equations
2.4Quadratic Equations
2.5Proportion
3Sequences, Functions & Graphs
3.1Sequences
3.3Graphs
3.4Common Graphs
4Geometry
4.1Angles, Lines & Triangles
4.2Polygons
4.5Circle Properties
4.6Trigonometry & Pythagoras’ theorem
4.7Mensuration of 2D Shapes
4.83D Shapes & Volume
5Vectors & Transformation Geometry
6Statistics & Probability
6.1Statistical Measures
6.2Graphical Representation of Data
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