If b 0 the equation is a linear equation in the single variable y for every value of xIt has therefore a unique solution for y which is given by. Here m stands for slope and b stands for y-intercept. Finding the slope of a line from a linear equation is easy.
Y 2x 3 and y 2x - 4 both have a slope of 2 so they are parallel as shown below.
Values for which the graph is positive. Positive negative slope. Answers Use the form ymxb where m is the slope and b is the y-intercept. Writing the equation that describes a linear function follows the same procedure for writing the equation of a line.