Step 5: Find the slope of your line. (Rise/run) explain how the thickness of a page relates to this slope. Step 6: What is y-intercept for this line? Give the equation of your line in the slope-intercept form. (y = mx + b) Step 7: Use the equation in step 6 to approximate the thickness of pinch that is 300 sheets. Step 8: Use the equation in step 6 to approximate how many sheets are in a pinch that is 3 cm.