Graphs of Circles Worksheets
How to Find the Equation of a Circle Based on the Diameter and the Center Point - A circle is a set of all points in a plane at a defined distance known as the radius and for the given point called the center. Apart from the radius and center, a circle includes various parts in its geometry. A line segment connecting the two points on the circle and passes through the center of the circle is known as the diameter of the circle. Let's assume that point (x, y) are the coordinates given on the circle. The center of the circle will be at (h, k), and the radius will be defined as the 'r'. Using the distance formula to find the equation of the circle. √(x2 - x1)2 + (y2 – y1)2 = d Substituting (x1 , y1) = (h, k) and (x2 , y2) = (x, y) and d = r √( x – h)2 + (y – k)2 = r Squaring each side (x – h)2 + (y – k )2= r2 The equation of the circle with radius r units and the center (h, k) is (x – h)2 + (y – k )2 = r2.
Demonstrates how to determine the equation of a circle. Practice problems are provided. Write the equation of a circle that has a center at (-1, 2) and a radius of 2?View worksheet
Explores how to find the coordinates of the center of a circle based on the equation of the circle. Practice problems are provided. What are the coordinates of the center of this circle? (x - 2)2 + (y - 3)2 = 9.View worksheet
Independent Practice 1
Example: Write the equation of a circle that has a center at (-2, -3) and radius of 8? The answers can be found below.View worksheet
Independent Practice 2
Features another 20 Graphs of Circles problems.View worksheet
12 Graphs of Circles problems for students to work on at home. Example problems are provided and explained.View worksheet
10 Graphs of Circles problems. A math scoring matrix is included.View worksheet
Homework and Quiz Answer Key
Answers for the homework and quiz.View worksheet
Lesson and Practice Answer Key
Answers for both lessons and both practice sheets.View worksheet
A mathematician organizes a lottery in which the prize is an infinite amount of money. When the winning ticket is drawn, and the jubilant winner comes to claim his prize, the mathematician explains the mode of payment: "1 dollar now, 1/2 dollar next week, 1/3 dollar the week after that...