Just type numbers into the boxes below and the calculator will automatically find the slope of two points. When the line is graphed m is the slope of the line and b is where the line crosses the y-axis or the y-intercept. For this one they give you a point x1 y1 and a slope m and have you plug it into this formula.
Use the equation of rise over run which is Y2-Y1 divided by X2-X1.
Updated March 04 2019 The slope-intercept form of an equation is y mx b which defines a line. To summarize how to write a linear equation using the slope-interception form you Identify the slope m. Y y1 m x x1 Dont let the subscripts scare you. Use slope to determine how steep and in what direction upward or downward a line goes.