IA_GPS_4 - INTERMEDIATE ALGEBRA GPS#4 1.4 VARIA BLE EQUA...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: INTERMEDIATE ALGEBRA GPS #4 1.4 VARIA BLE, EQUA TIONS, AND FORM ULA S NAME: Useful Terminologies: * Variable: Represents an unknown quantity. [Example: x, y, z , A, B, C .] * Algebraic Expression: Consists of numbers, variables, operation symbols, and grouping symbols. [Example: 3 x ! 5 ] * Equation: A statement that two algebraic expressions are equal – contains an equal sign. [Example: 3 x ! 5 = y ] * Formula: An equation used to calculate one quantity, using known values of other quantities. [Example: P = 2 L + 2W ; A = !r 2 ; C = 2!r ] 1. Write a formula for the following: a) Find the area of a square with a side of x . b) Find the area of a circle with a radius a . c) Find the circumference of a circle with a radius b . 2. Evaluate the formula for the given value(s) of the variable(s). a) P = 2 L + 2W ; L = 3, W = 4 b) y = 2 x + 1; x = 8 c) A = 1 bh; b = 6, h = 2 2 d) y = x 2 ; x = 5 3. a) Find a value for a so that y = ax models the data. x -2 -1 0 y -8 -4 0 1 4 2 8 5 -10 6 -12 4. a) Write an equation that models the data. x 1 2 3 y 2 4 6 4 8 5 10 b) Write an equation that models the data. x -2 -1 0 y 4 1 0 1 1 2 4 b) Find a value for a so that y = ax models the data. x 2 3 4 y -4 -6 -8 R0907 a.s. http://faculty.valencia.cc.fl.us/ashaw ...
View Full Document

This note was uploaded on 10/18/2011 for the course MAC 1103 taught by Professor Shaw during the Summer '11 term at Valencia.

Ask a homework question - tutors are online