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Algebra

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Algebra Help

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Algebra Basics
Lesson Index If you have little or no algebra background, you may read the lessons in the order listed below. If you have some algebra background, you can usually skip to any topic that you need to learn or review. Algebra Basics Equation Basics The equation and its relationship with a balance. Sample Problem 2x + 7 = x + 18 Solution x = 11 Proportion Basics How to solve basic proportions. Sample Problem 12 = 4 3 x Solution x = 1 Word Problem Basics Introduces methods for solving integer word problems through equations. Sample Problem What are two consecutive even integers that have a sum of 26? Solution 12 and 14 Simplifying Simplifying Intro An introduction to simplifying concepts. Simplifying Multiple Signs

linear equations

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Linear Equations Y=mx+b where m is slope and b is the y intercept of the linear line
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Inequalities Signs

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You know you flip the inequality sign when you divide or multiply be a negative. 3(x-1)<12 when you solve you get x<5 but if you changed the 3 to a -3 the solution would become x>-5 where you would flip the sign from < to >

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How to make a linear regression

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How to make a linear regression Using TI-84 PSE And how to calculate the correlation coefficient (r) and thecoefficient of determination(r^2) Press mode Stat editenter data Stat?calc?LinReg(ax+b) Alpha?f4(trace)?y1..enter Write your correlation coefficient and thecoefficient of determination. Go to y= and turn on plot 1 Zoom?Zquadrant?enter Answers Clear y1 and turn off plots 2nd mem (+)...4?enter Modemake it look like this 2nd Quit (mode)?2nd off(on)
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