By dkmathstats on Skatehive
Hi there. In this math post I cover graphing linear equations. Topics Slope & y-intercept Review Graphing Linear Equations With Table Of Values Phone Plan Example Closing Notes Slope & y-intercept Review The equation of a line follows the format of y = mx + b. The value m refers to the slope of a line, the value b is the y-intercept, the independent variable x is an input number and the dependent variable y is the output from mx + b. y=mx + b Note that the y-intercept is the y-value when x = 0. Graphing Linear Equations With Table Of Values In this section I showcase graphing linear equations with a table of values. Example One Graph y = 3x. Use a table of values. I generally use small and easy values for x such as 0, 1, 2, -1 and -2. Use each x-value as an input to get the corresponding y-value. When x = 0 then y = 0. If x = 1 then y = 3. When x = -2 then the output y becomes negative six (from -2 times 3). I go with five points but two points is enough the create