Solve A = bh for b. To solve for b, we will treat b as the only variable in the equation and use properties of equality to isolate it on one side. We will treat the other variables as if they were numbers (constants). To solve for a specified variable means to isolate it on one side of the equation. We use the same steps to solve an equation for a specified variable that we use to solve equations with only one variable. A = To solve for b, we will isolate b on this side of the equation. 2· A = 2: To clear the equation of the fraction, multiply both sides by 2. = bh Simplify. 2A To isolate b, undo the multiplication by h by dividing both sides by h. h h 2A bh On the right side, remove the common factor of h: = b. h 2A Reverse the sides of the equation so that b is on the left. %3D Solve A = ra for a. 4 a = II

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.