Calculating Slope Using Two Points. To calculate the slope on a graph, you’ll need two points (x1, y1) and (x2, y2). These points represent two distinct locations on the line. The formula for ...

The formula bar now looks similar to the following:=SLOPE(A2:A5,B2:B5)Note that the number of y and x values highlighted must be equal. Press "Enter." Excel displays the slope of the line in the ...

2. Point-Slope Formula. When you know one point on the line (x1, y1) and the slope (m), use point-slope formula to find intercept: y – y1 = m(x – x1) Simply plug in your known values into this formula ...