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Yr 8 Linear Graphs

Co-ordinates & Linear Graphs

TermDefinition
Coordinates Describe a position on the Cartesian Plane.
Origin Where the x and y axis intersect. The coordinates are (0,0)
x- axis x- axis is the horizontal axis
y-axis y-axis is the vertical axis
Coordinates are written as (x,y)
Alphanumeric grid references for a map Letter number
Cartesian Plane Describes the location on a plane by using two numbers as coordinates
Quadrants The axes dividing the Cartesian Plane into four sections
Linear Pattern Patterns forms a straight line
Non Linear Pattern Patterns do not form a straight line.
Linear functions Linear rules f(x)=
Gradient Measure of steepness
Gradient formula is....... m=rise/run
Rise..... Is the vertical distance between any two point on the line
Run..... Is the horizontal distance
y-intercept Is the y-intercept of the point where the graph crosses the y-axis.
Rule for all Linear graphs is...... y=mx + c
In the rule for all Linear graphs the 'm' is y=mx + c The 'm' is the gradient
In the rule for all Linear graphs the 'c' is y=mx + c The 'c' is the y-intercept
In the rule for all Linear graphs the 'y & x' is y=mx + c The 'y & x' are the variables
When sketching linear graphs Only two point are needed
When two graphs intersect..... The two equations share the same x and y coordinates. This point is the solution to the two equations.
Created by: Tania L Kremers
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