MathQuiz Due Saturday
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jorfeo_math2000920quiz205.docxMath 009
Quiz 5 Page 8
Math 009 Quiz 5
Professor: Jillian Orfeo
Name________________________________
Instructions:
· The quiz is worth 50 points. There are 10 problems, each worth 5 points. Your score on the quiz will be converted to a percentage and posted in your assignment folder with comments.
· This quiz allows open book and open notes, and you may take as long as you like on it provided that you submit the quiz no later than the due date posted in our course schedule of the syllabus. You may refer to your textbook, notes, and online classroom materials, but you may not consult anyone.
· You should show all of your work to receive full credit. If you do not show work, you may earn only partial or no credit.
· Please type your work in your copy of the quiz, or if you prefer, create a document containing your work. Scanned work is also acceptable. Be sure to include your name in the document. Review instructions for submitting your quiz in the Quizzes Module.
· If you have any questions, please contact me by e-mail ([email protected]).
At the end of your quiz you must include the following dated statement with your name typed in lieu of a signature. Without this signed statement you will receive a zero.
I have completed this quiz myself, working independently and not consulting anyone except the instructor. I have neither given nor received help on this quiz.
Name: Date:
Please remember to show ALL of your work on every problem. Read the basic rules for showing work posted in our LEO classroom BEFORE you start working on the quiz.
1) Given the line with the equation x = 6:
a) Find at least three ordered pairs that satisfy the equation.
b) Find the slope of the line.
c) Graph the line. You may draw your graph on the grid below or create your own graph.
2) Given the line with the equation y = -4:
a) Find at least three ordered pairs that satisfy the equation.
b) Find the slope of the line.
c) Graph the line. You may draw your graph on the grid below or create your own graph.
a) Write the equation in slope-intercept form.
b) State the slope of the line.
c) State the y-intercept of the line as an ordered pair.
d) Use slope-intercept form to graph the line. You may draw your graph on the grid below or create your own graph.
4) Graph the linear equation by finding and plotting the intercepts. Show all work and write each intercept as an ordered pair. You may draw your graph on the grid below or create your own graph.
x-intercept =
y-intercept =
5) Determine whether the lines with equations given are parallel, perpendicular, or neither. Show all work and justify your conclusion.
6) Write the equation of the line through the points (2, -5) and (-3, 4) in point-slope form.
7) Convert the equation that you wrote in #6 to slope-intercept form.
8) Convert the equation that you wrote in #6 to standard form.
9) A local Best Buy store reported that it sold 476 iPhone 6 Pluses on the day that they became available. Five days later, the sales were down to 196 iPhone 6 Pluses. Assume that the relationship between number of days since the phone became available and number sold is linear and let x = the number of days since the phone became available and y = number of phones sold at this Best Buy store.
a) Write two ordered pairs to represent the sales on the days described.
b) Find the slope of the line through those ordered pairs.
c) Write an equation in point-slope form of the line.
d) Convert the equation to slope-intercept form.
e) Explain in one or two sentences what the slope means in the context of this problem.
a) According to this model, how many heart transplants were performed in the U.S. in 2001?
b) According to this model, how many heart transplants can be expected in the U.S. in 2020?
c) According to this model, in what year will there first be more than 5000 heart transplants performed in the U.S.?
d) Explain in one or two sentences what the slope means in the context of this problem.
End of quiz: please do not forget to write and sign (or type) the required statement explained in the box on Page 1 of the quiz.
x
y
2510
xy
+=
4520
xy
-=
3520
10612
xy
xy
+=
-=
