Equations+and+Inequalities-Target+B-Solving+for+What?-Guided+Learning

Target B: Solve Literal Equations
Tom thinks that it is easier to solve the equation for the length and then substitute 24 for the perimeter and values for the width to determine values for the length of the rectangle. Whom do you agree with and why? ||
 * [[image:Discuss this.png width="173" height="97"]] || Dave and Tom know the perimeter of a rectangle is 24 inches. The restrictions on the width of the rectangle are values between 2 and 8 inches. What are the lengths of the rectangle? Dave thinks that the easist way to determine the values for length of a rectangle is to substitute 24 for the perimeter, substitute values in for the width and solve for the length using the equation 2l+2w=P.

Writing Equations in Function Form (Solve for y) media type="custom" key="28700900"

Solving Literal Equations When you solve a literal equation, like writing an equation in function form, you need to isolate the variable you are solving. media type="custom" key="26246116"

A quick note about equivalent equations. These answers are both correct but look a little different. math \large x=\frac{C}{A}-\frac{By}{A} math

or

math \large x=\frac{C-By}{A} math

So remember that your answer may be correct but not look exactly like another answer.

Quick Check - Target B - Solve Literal Equations
a) Write the equation 3x - 4y = -12 in function form.

b) Solve the equation math P=2l+2w math for //w//