This is a free lesson from our course in Algebra I
In this lesson, you'll learn the basics of graphing. In simple terms, the graph of an equation is the set of all the points whose coordinates satisfy the equation. As you can guess,
if the equation represents a line, you can draw the graph by connecting all points that satisfy the equation. But even if the equation
does not represent a line, its graph can still be drawn by passing through all the
points that would satisfy the equation. (More text below video...)
(Continued from above) The steps involved in drawing a graph are simple:
• plug in values of x
• compute y from the equation
• plot the ordered pair given by these two values
• repeat the three steps above till you have a set of points you can connect, and
• draw the graph that connects them
Many times you'll have a statement such as x > 5 that needs to be graphed.
Because this is not an equation, it does not need to be graphed on the coordinate plane.
A number line does the job just fine! E.g. Graph: x < 4 Solution: The problem asks you to graph all numbers that
are less than 4.
This part of lesson also shows us how to graph and find out the solution set of an inequality using graphs.
Winpossible's online math courses and tutorials have gained rapidly popularity since
their launch in 2008. Over 100,000 students have benefited from Winpossible's courses...
these courses in conjunction with free unlimited homework help serve as a very effective
math-tutor for our students.
-
All of the Winpossible math tutorials have been designed by top-notch instructors
and offer a comprehensive and rigorous math review of that topic.
-
We guarantee that any student who studies with Winpossible, will get a firm grasp
of the associated problem-solving techniques. Each course has our instructors providing
step-by-step solutions to a wide variety of problems, completely demystifying the
problem-solving process!
-
Winpossible courses have been used by students for help with homework and by homeschoolers.
-
Several teachers use Winpossible courses at schools as a supplement for in-class
instruction. They also use our course structure to develop course worksheets.
