Normal+Lines+(BC)

//__ Normal Lines __ // are lines that are perpendicular to the functions tangent line. In order to find the tangent line of a function you need to find an x-coordinate, a y-coordinate, and the slope of the function. Ex: Find the normal line of the function at   First you have to find the __y-coordinate__ by plugging the x-value into the y-equation.

Next, you have to take the original y-equation and first its derivative and then plug the x-value into the equation to the __slope__.





After you've found the y-coordinate, x-coordinate and slope of the function, to plug the answers into the below equation. Remember, and

To turn the tangent line into a normal you have to find the negative reciprocal of tangent equation. You can do this by negating the signs in front of each part the equation and then putting the slope over 1.