Straight Line Graphs  
Summary

linear functions have graphs which are straight lines. the general equation of a linear function is ax + by + c = 0. the exponents of both the x term and the y term are 1. another often used form of linear functions is y = mx + c. 
Key Skills 

Vocabulary

linear function, cartesian graph, coordinates, ordered pair, origin,gradient, vertical, xintercept, yintercept 