The graph can be used for reference, but determine the answer using algebra and equations. Show all work.
Equation of the Altitude
Points: D(−5,−3), E(7,1), and F(−3,7) are the vertices of a triangle. Determine the equation of the altitude of the triangle from D to side FE. State the equation in standard form.
Answers
It is expected that students have met plotting points on the plane and have plotted points from tables of values of both linear and non linear functions.
The number plane (Cartesian plane) is divided into four quadrants by two perpendicular axes called the x-axis (horizontal line) and the y-axis (vertical line). These axes intersect at a point called the origin. The position of any point in the plane can be represented by an ordered pair of numbers (x, y). These ordered pairs are called the coordinates of the point.
The point with coordinates (4, 2) has been plotted on the Cartesian plane shown. The coordinates of the origin are (0, 0).
Once the coordinates of two points are known the distance between the two points and midpoint of the interval joining the points can be found.