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

How To: Calculate Faster Than a Calculator

How To: Do long division without a calculator

How To: Solve a system of equations with the comparison method

How To: Find the equation of a tangent line

How To: Find a number given Its percent

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

How To: Find the value of a variable in an algebraic equation

How To: Rationalize square roots

How To: Find the vertical asymptotes of a rational function

How To: Solve word problems involving the addition of whole numbers

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

How To: Convert Fahrenheit to Celsius with a formula

How To: Subtract a mixed number from a proper fraction in basic math

How To: Convert between diameter and radius

How To: Find the area of a triangle when given 2 sides & angle

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

How To: Find the 100th term in a sequence

How To: Solve for the missing ratios or proportions

How To: Express a fraction in lowest terms in basic math
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