One type of equation is called point-slope form and it requires you to know or find out the slope of the line and the coordinates of one point on the line. The line is then solved in slope intercept form and sketc. The second step will be to find the y-intercept.
Y y1 m x x1 y y 1 m x x 1 It should be noted that y1 y 1 does not mean y multiplied by 1.
This form is quite useful in creating an equation of a line if youre given the slope and a point on the line. If you know two points on a line you can use them to write the equation of the line in slope-intercept form. The first step will be to use the points to find the slope of the line. Some people refer to the slope as rise over run.