How to Solve for Range

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Solve for a range by graphing variable values on a linear graph to view the linear inequalities. Define the variables before solving for range with help from a tutor in this free video on math.

Part of the Video Series: Math Lessons
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Video Transcript

HI, my name is Samir Malik and I'm a private tutor for middle school and high school students in the Austin, Texas area. Today I'm going to be discussing on how to solve for a range. Now solving for range can be fairly easy if you're able to draw a line on a graph or on a plane; so then you can find out what the values of the x values are or the y values are and then solve for the range accordingly. So what I would like to do is illustrate this by using, using an example by graphing it as a linear inequalities, you can find out how we can solve for the range for the inequality. So we have our line right here and we, on this line we're going to draw values, values of x; and we'll have 0, 1, 2, 3 and 4. And we'll draw a really thick line which goes from 0 to 4, 0 to 4 as our line and they're able to understand here, and because it's a dotted line on both ends, we're going to include 0 and 4 so we know here that x has to be greater than or equal to 0 and x has to be less than or equal to 4 from this particular equation. So now we're able to calculate the range by graphing it on an inequality and calculating the points of it and then solving accordingly to find out what the values for, in our example that I gave you, for x would be. Now where you can use any variable you want to on a line, but you need to define which variable you're using before you calculate and solve for that particular value.


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