Where X1 X2 X Axis Points Y1 Y2 Y Axis Points X Y Axis. This gives us 10 - 8-2 - 3. Lets use the examples in the last lesson.
Let me further explain using my example in 3 straightforward steps.
M Y 2 Y 1 X 2 X 1 The answer M is the slope of the line. The slope of the line between two points x1y1 x 1 y 1 and x2y2 x 2 y 2 is m y2y1 x2x1 m y 2 y 1 x 2 x 1 Say the formula to yourself to help you remember it. Find the slope of the tangent line to the curve fx 2x 2 3x 4 passing. We will use the formula to calculate the slope of the line passing through the points 38 and -2 10.