1.3+Solve+Linear+Equations

=Solve Linear Equations=
 * ====An equation is a statement that two expressions are equal.====
 * ==== Linear equation in one variable is an equation that can be written in a form of ax+b=0.====
 * ====An solution is a number of an equation in one variable if substituting the number for a variable results in a true statement.====
 * ==== Equivalent equations are the equations that have the same solution====


 * ==== The following are few examples of equivalent equations . ====

32//a// = 8 and [[image:http://www.northstarmath.com/sitemap/images/clip_image002_197.gif width="48" height="37"]]
[] Type in google if hyperlink doesnt work. The graph of **y = 2x+1** is a straight line Here are some example values: Check for yourself that those points are part of the line above! [] Type in google if hyperlink doesnt work.
 * ===Example: **y = 2x+1** is a linear equation :===
 * When x increases, y increases **twice as fast**, hence 2x
 * When x is 0, y is already 1. Hence +1 is also needed
 * So: y = 2x + 1
 * ~ x ||~ y = 2x + 1 ||
 * **-1** || y = 2 × (-1) + 1 = **-1** ||
 * 0 || y = 2 × 0 + 1 = **1** ||
 * **1** || y = 2 × 1 + 1 = **3** ||
 * **2** || y = 2 × 2 + 1 = **5** ||


 * Tranformation that produces equivalent equations.

Need help sovling linear equations here is a video to aid you! media type="custom" key="23790964" Now that we have reviewed this unit lets see if you can answer these questions!

Equivalent equations :Sovle for x