Question

How do you graph $ r = 4 $ ?

Answer 1

Hint: In order to graph the above expression, draw a circle with radius equal to 4 units as the expression $ r = 4 $ is a set of points which has distance of 4 units from the origin. Use the compass to draw the circle and ruler for the accurate measurement.

Complete step-by-step answer:
We are given $ r = 4 $ .
The expression $ r = 4 $ is basically a set of those points on the coordinate plane, which have distance from the origin equal to 4 units.
In other words we can say that the $ r = 4 $ is a circle which is having radius equal to 4 units
The following is the graph of the circle having radius equal to 4 or simply the graph of $ r = 4 $ , indicated by the red color.

Note: 1. Cartesian Plane: A Cartesian Plane is given its name by the French mathematician Rene Descartes ,who first used this plane in the field of mathematics .It is defined as the two mutually perpendicular number line , the one which is horizontal is given name x-axis and the one which is vertical is known as y-axis. With the help of these axes we can plot any point on this cartesian plane with the help of an ordered pair of numbers.
1.Draw the cartesian plane only with the help of a straight ruler and pencil to get the perfect and accurate results.
2.Properly use the compass to graph the circle with accurate measurement of 4 units.
3. x-intercept is the point at which the line intersects the x-axis of the plane and similarly y-intercept is the point at which line intersects the y-axis of the plane.