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Graphing and Writing Linear Functions
SOLVING EQUATIONS INVOLVING RATIONAL EXPONENTS
Linear Equations and Graphing
Systems of Linear Equations
Solving Polynomial Equations
Matrix Equations and Solving Systems of Linear Equations
Introduction Part II and Solving Equations
Linear Algebra
Graphing Linear Inequalities
Using Augmented Matrices to Solve Systems of Linear Equations
Solving Linear Inequalities
Solution of the Equations
Linear Equations
Annotated Bibliography of Linear Algebra Books
Write Linear Equations in Standard Form
Graphing Linear Inequalities
Introduction to Linear Algebra for Engineers
Solving Quadratic Equations
THE HISTORY OF SOLVING QUADRATIC EQUATIONS
Systems of Linear Equations
Review for First Order Differential Equations
Systems of Nonlinear Equations & their solutions
LINEAR LEAST SQUARES FIT MAPPING METHOD FOR INFORMATION RETRIEVAL FROM NATURAL LANGUAGE TEXTS
Quadratic Equations
Syllabus for Differential Equations and Linear Alg
Linear Equations and Matrices
Solving Linear Equations
Slope-intercept form of the equation
Linear Equations
DETAILED SOLUTIONS AND CONCEPTS QUADRATIC EQUATIONS
Linear Equation Problems
Systems of Differential Equations
Linear Algebra Syllabus
Quadratic Equations and Problem Solving
LinearEquations
The Slope-Intercept Form of the Equation
Final Exam for Matrices and Linear Equations
Linear Equations
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Linear Equations

1. [2 Points] Write the slope-intercept form of the equation of the line through the point
(5,−1) that is parallel to the line through the points (-3, 8) and (7, 4).

ANS: __________

2. [3 Points] The sales of a small software company are a linear function of time. Sales
 were $120,000 in 1999 and $180,000 in 2003. If the linear trend continues, in which year
will the annual sales reach $240,000?

ANS: __________

3. [5 Points] Only four of the following five points are on the same line. Which point is
not on the line determined by the other four?

ANS: __________

1. [2 Points] Write the slope-intercept form of the equation of the line through the point
(5,−1) that is parallel to the line through the points (-3, 8) and (7, 4).

Solution: Slope of line between (-3, 8) and (7, 4) The point-slope equation of the line through (5,−1) is
 

ANS:

2. [3 Points] The sales of a small software company are a linear function of time. Sales were
$120,000 in 1999 and $180,000 in 2003. If the linear trend continues, in which year will the
annual sales reach $240,000?

Solution:

Points: and

Answer:

ANS: 2007

3. [5 Points] Only four of the following five points are on the same line. Which point is not
on the line determined by the other four?

Solution: First, make all y values have the same denominator (2110). Now, ignore
denominators (easier) and find the slope between any one (fixed) point and each of the rest. We
select. If all slopes are different we toss. If only one slope is different
from the remaining slopes, toss the point which determines the different slope with.
ANS: