--Answer the questions in the project using numbers. --Changing the speed variable = changing the speed at which the graph is being created. --Reset project (click Green Flag) to create a new graph. Maths Linear Functions A function is an expression involving one or more variables. Basically like an algorithm that you follow based on the variable(s) given. Functions are noted in this way: "function f" to declare it and "f(variable name)" to use it. For example, function f, f( x )=2x+1. Whatever value x has, I have to double it and add 1 to apply the function. And as long as x is not defined on an interval, the range of values can go on forever. For graphs: We represent a function through a graph in Cartesian coordinates. x = x y = f( x ) -- Equation of the graph. Now, linear functions refer to the functions in the form of f( x ) = m*x + c, which will be a straight line. y = m*x + c y , x - coordinates. m - how steep the line is. c - the value of x when y = 0. In other words, when f( x )=0 then x=c.
