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 find answers to quadratic function problems in intermediate algebra by graphing.
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How To: Remember "greater than" & "less than" symbols

How To: Find a number given Its percent

How To: Find the Percent Given Two Numbers

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

How To: Evaluate fractions containing variables

How To: Find a central angle

How To: Find a missing side of a triangle, similar to another

How To: Convert between diameter and radius

How To: Do normal probability calculations on a calculator

How To: Find the Slope Given 2 Ordered Pairs

How To: Find the 100th term in a sequence

How To: Round a decimal number to the nearest tenth in basic arithmetic

How To: Calculate Faster Than a Calculator

How To: Translate a shape

How To: Convert Fahrenheit to Celsius with a formula

How To: Divide small numbers by big numbers

How To: Solve percentages without a calculator

How To: Learn Calculus in 20 minutes

How To: Find the area of a parallelogram using geometry

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