Instructional Video: Plotting Points on the Coordinate Plane
The horizontal number line, usually called the x-axis, is typically used for the independent variable. The vertical real number line, usually called the y-axis, is used for the dependent variable.
Ordered pairs with 0 as a coordinate do not lie in a quadrant; these points lie on an axis.
Example: Find the distance and midpoint between the two points: (3, 4) and (−1, 2).
Example: Find the distance and midpoint between the two points: (0, 0) and (−3, 4).
Example: Find the distance and midpoint between the two points: (−1,−1) and (1,1).
Example: Find the distance and midpoint between the two points: (−2,−5) and (−4,−3).
Circle Word Problem: If the diameter of a circle is defined by two points (−3, 4) and (7, 4), find the center and radius of the circle. (Hint: diameter = 2*radius)Area of a Circle: Find the area of a circle given the center (−3, 3) and a point (3, 3) on the circle.
Video Examples on YouTube: