x-intercept: The point(s) at which a graph crosses the x-axis.
The x-intercept(s) will always have a number as the x-coordinate
The x-intercept(s) will always have a zero as the y-coordinate
(2, 0) or (-5, 0) are examples of x-intercepts
Graphing Lines Using Intercepts
Graphing 2x + 3y = 6 Using Intercepts
The equations that work best with the intercept method are ones like this where
both the 2 and the 3 go into the 6 evenly.
Make a simple table of values:
Find y when x = 0
Horizontal and Vertical Lines
Horizontal Lines go left to right, like the horizon.
All the y-coordinates are 4.
Thats why the equation is y = 4.
The equation of a horizontal line is always y = #
The horizontal line y = 0 is the x-axis
The slope of a horiz
What Types of Trucks Are in Each Truck Class? . 109
Heaviest Trucks Consume an Average of 6.5 Gallons per Thousand Ton-Miles . 110
United States Accounts for 61% of Medium/Heavy Truck Production in North America . 111
Forum: If Only I Had a System
Applications of Systems of Linear Equalities
When students are surveyed about what makes a good math Forum, at least half of the
"discussing how to work problems"
"seeing how this math applies t
Effect of Weight and Roadway Grade
on the Fuel Economy of Class-8 Freight
Oscar Franzese, PhD
Reports produced after January 1, 1996, are generally available free via
Reviewing Your Tests
Go into the gradebook and look for the test.
Tests have a green, diamond-shaped icon.
There should be link to Review the test.
Correct answers should have green checks
like Question 1 in this picture
Incorrect answers should have a re
The Seven Steps to Success
1) Homework Helpers
2) Other Handy Helpers
3) Practice Tests
4) Review and Retake
6) Study Plan
7) Study Guide
MyMathLab has a wealth of resources to make
your study of College Algebra easier.
Raising Your Hand in Your Online Math Class
Remember those good old days in high school
when your teacher was right there to help?
In many college classes,
its much harder to get your questions answered!
Its actually easier to get personalized attention
The Square Root Property
Every positive number has 2 square roots a positive one and a negative
Squaring and taking the square root are opposite operations and undo
The square root
of x2 is x.
64 has both a + and
Graphing lines by plotting points
1. Solve the equation of the line for y.
2. Make a table of values: You choose the values of x. Remember KISS (Keep It
Simple, Students!) Choose numbers that are small and easy to work with.
3. Plot the two points and con
Week 5 Forum Math 110
I hope everyone is doing well in class and that those of you who have not taken
math in a while. I only took this class because it was a requirement for my
degree. Know that I have gotten through 4 weeks of the class my attitude has
Week 4 Forum Math 110
#23 - On a buying trip in Los Angeles, Rosaria Perez ordered 120 pieces of jewelry: a number of
bracelets at $8 each and a number of necklaces at $11 each. She wrote a check for $1140 to pay
for the order. How many bracelets and how
Week 3 Forum Math 110
The reason for choosing to use this example is because my husband has been
confined to a wheelchair for about a year now and hopefully he will not be in
that wheelchair for long with upcoming surgeries that are going to happen very
Week 2 Forum Math 110
Purplemath web site has been used in my family for the last five or so years. We as a
family turned to this web site because it had everything that the kids needed to help them
through math, and as a mother of a 13 year old and a 20
Graphing Linear Inequalities
Make your graph big enough so that you can see what youre doing.
Learn the tools that you can use to graph lines and inequalities.
Line drawing tool
Paint bucket for shading
For choosing solid or dashed lines
Graph this linear
Relation: A set of ordered pairs is a relation.
cfw_(1, 2), (2, 2) (3, 4), (5, 6)
Domain: Set of all x-coordinates in a relation. Domain: cfw_1, 2, 3, 5
Range: Set of all y-coordinates in a relation. cfw_2, 4, 6 only write 2 once.
Function: A re
My name is Joseph Starling, prefer to be called Joey. I currently am working on my first degree in Business
Administration. I live in Athens, Alabama with my wife and our kids (my step children), Andy and Shelby. I have one kid
of my own, my beautiful dau
MATH110 Final Exam July 2013
MATH110 Final Exam July 2013
Part 1 of 15 -
0.0/ 4.0 Points
0.0/ 4.0 Points
Question 1 of 25
Given that y varies directly with x, write the linear function
Solving Story Problems
with Quadratic Equations
Cost and Revenue Problems
he cost in millions of dollars for a company to manufacture x thousand automobiles is given by the
function C(x) = 4x2 - 16x + 36. Find the number of automobiles that must be produc
The Real Numbers
All of the numbers that you are
currently familiar with are part of
the set of real numbers.
Natural or Counting Numbers
Man first used numbers to keep track of sheep,
goats and other countable possessions.
The Natural or Counting Numbers
Solving Radical Equations:
Remember that squaring and taking the square root are opposite operations just like
adding and subtracting are opposite operations.
If you want to get rid of a square, you can take the square root.
If you want to ge
Solving Quadratic Equations by the Quadratic Formula
Standard form of a quadratic equation: ax2 + bx + c = 0 and a 0
The quadratic formula (this always works!):
b b 2 4ac
Solve: x2 + 3x 4 = 0
a = 1; b = 3; c = 4
3 32 4(1)(4)
Rationalizing the denominator:
The point of rationalizing the denominator is to take a fraction with a radical on the bottom and
make it into an equivalent fraction with a whole number on the bottom.
Example 1: Square root on the bottom - mul