Use the limit definition of derivative to find fx. This gives us 10 - 8-2 - 3. To find the slope of a line from a graph first choose 2 points along the line and write down the X and Y coordinates for each.
If a quiz asks for the slope of a horizontal line say zero.
If youre given the formula and need to find m you may need to. Finding the Slope of a Linear Equation. If youre given the formula and need to find m you may need to. First solve for the slope in decimal terms bearing in mind that percent is just 100 times the original number.