Unit 4

Cartesian Plane

Scatter Plots

Quadrants

Co-ordinates

Relationships

Vertical co-ordinates are on the X-axis

Horizontal Co-ordinates are on the Y-axis

There are 4 quadrants on a graph

The origin is where the x and y co-ordinates start

image

II and III are negative quadrants, whereas I and IV are positive

X and Y axis must be labelled, along with a title

Plotted points can sometimes be correlated

Line of Best Fit

Negative correlation goes down, positive correlation goes up

Drawing a line across a graph showing correlation, going through the majority of points

Interpolation/Extrapolation

Interpolation is when you estimate within results

Extrapolation is when you estimate outside of results