From Ramanujan to calculus cocreator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to graph and solve linear inequalities in two variables in algebra.
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How To: Find the area of a parallelogram using geometry

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How To: Spend Money on a Graphing Calculator? Nah—Just Use This WebBased TI Emulator

How To: Find the Percent Given Two Numbers

How To: Remember "greater than" & "less than" symbols

How To: Find a number given Its percent

How To: Calculate Faster Than a Calculator

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Find the slope of a line given 2 points with fractions

How To: Learn Calculus in 20 minutes

How To: Find a slope of a straight line with: Ax + By + C = 0

How To: Find the area of irregular shapes

How To: Convert Fahrenheit to Celsius with a formula

How To: Do normal probability calculations on a calculator

How To: Do long division without a calculator

How To: Find the formula of a piecewise function given a graph

How To: Calculate the area of a parallelogram

How To: Find the Slope Given 2 Ordered Pairs

How To: Find the area of a parallelogram using geometry

How To: Calculate percent composition for chemistry

How To: Determine if a point lies on a line in slope intercept

How To: Figure out the domain & range of a piecewise function

How To: Spend Money on a Graphing Calculator? Nah—Just Use This WebBased TI Emulator
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