MAT 171
Linear Modeling (Sec 1.2, 2.1)
Equations are used in algebra for 2 distinct purposes:
1. To state mathematical properties/formulas.
2. To model and solve problems that occurs in the real world.
In this course, one of the main things you will be le
LINEAR REGRESSION SEC 2.7
Data seldom fall on a precise line. Because of measurement errors or other factors, a scatterplot
of real-world data may appear to lie more or less on a line but not exactly.
Fitting lines to data is one of the most important
LINEAR REGRESSION SEC 2.7
Data seldom fall on a precise line. Because of measurement errors or other factors, a scatterplot
of real-world data may appear to lie more or less on a line but not exactly.
Fitting lines to data is one of the most important
MAT 171
Lab#1 - Lines & Linear Models
DIRECTIONS:
Name:
Date:
Show all your work on separate paper and attach to this sheet.
Please be neat and organized. Place only your answers on this page.
1. USING A GRAPH. Find the slope and both intercepts of the li
MAT 171
Linear Modeling (Sec 1.2, 2.1)
Equations are used in algebra for 2 distinct purposes:
1. To state mathematical properties/formulas.
2. To model and solve problems that occurs in the real world.
In this course, one of the main things you will be le
Linear Modeling WS Solutions
1. a) y = 1/2x + 1
b) y = -0.3x + .3
2. a) y = 13.3x 6.1
b) y = -0.2x+1
3. a) x = time in hours, y = gallons of water in the pool
b) y =120x + 1500
c) 1580 gallons after 40 minutes; ~29.17 hrs until 5,000 gallons
4. a) x = tim
Factoring Review - Quadratic Expressions
1.
2.
3.
4.
5.
6.
GCF: Factor out the greatest common factor (if there is one)
Two Terms: Difference of squares?
Three Terms: a=1? a>1?
Four Terms: Grouping
Prime: the polynomial cannot be factored using the above
MAT 171
Linear Regression HW
Name:
Date:
1) Femur Length and Height: Anthropologists use a linear model that
relates femur length to height. The model allows an anthropologist to
determine the height of an individual when only a partial skeleton
(includin
PART I:
1. Find a Model from a Graph:
a.
b.
y
y
x
x
2. Find a Model from a Table:
a.
X
y
-2
-32.7
1
7.2
2
20.5
5
60.4
X
Y
0
1
5
0
10
-1
20
-3
b.
Find a Model from a Described Situation:
a. Define the variables.
b. Write the equation in slo
Notes 8.1, 8.2, 8.3: Solving Systems of Linear Equations
3 Cases to consider for systems of equations:
1. Inconsistent if there are no common solutions (i.e., parallel lines)
2. Dependent if there are an infinite number of common solutions (i.e., the equa
Name: Date: Period:
Practice Worksheet: Graphing Exponential Functions
(we)/u%/
Without a calculator, match each function with its graph.
@I]=2?33 AZ]=P?VU Kste=4ao
l 1 r 1) .
( r - J t a. 1') a =
:1 x a " no; . . 1/6 =421 '
_L_Alfo9 2(2)cfw_3M) ~
MAT 171 Prerequisite Skills Review Lab Name A I S & V g
Answer the question.
1) Write an equation from the word statement. Use x as the variable. Do not solve the equation.
"When ten is added to four times a number, the result is eight less than the numbe
Lecture Notes Lines in the Plane
SLOPE OF A LINE
DEF: The slope of the line passing through the 2 given points P =(x1,yl) Q = (x2 , y2 ) is determined by
the formula, slope = m = E = y2 _ J11
run x2 xE
NOTE: (1) If m is positive, then the line rises as we
Name
Math 171
1. Determine the following information from the function:
a) Degree _
b) Leading coefficient _
c) End behavior (_, _)
2.
Unit 3 Practice Test
P x 2 x 5 x 13x 4
3
2
.
d) Y-intercept _
e) Max # of x-intercepts _
f) Max # of turning pts _
Does
MAT 171 PRE-ASSESSMENT
DO NOT WRITE ON THIS EXAM
Directions Choose the best answer for each question. Write your answer on the
answer sheet provided.
1.
Change the word statement to an equation. Use x as the variable.
"When 5 times a number is subtracted
COASTAL CAROLINA COMMUNITY COLLEGE
SUMMER 2012 COURSE SYLLABUS
MAT 070 Introductory Algebra
INSTRUCTOR: Mr. James Grossman
OFFICE: Coastal Carolina Community College (CCCC) Mathematics Division
TELEPHONE: 910.938.3223 (Adjunct Faculty Assistant leave a me
CCCC Mathematics Department Policy
Student Expectations
Refrain from any behavior that could be considered disruptive to the educational process or distracting to
the other students or the instructor. Inappropriate behavior in class includes, but is not l