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, horizontal, spreadsheet, xintercept, yintercept, xaxis, yaxis. 