Intermediate Algebra – Student Workbook – Second Edition 2013

More documents

Recommendations

Info

$Lesson 2a – Assessment - Scottsdale Community College - Math Blog$

Lesson 2a – Linear Functions and Applications Mini-Lesson Once your data columns are clear, enter the input data into L1 (press ENTER after each data value to get to the next row) then right arrow to L2 and enter the output data into L2. Your result should look like this when you are finished (for L1 and L2): Step 2: Turn on your Stat Plot Press Y= Use your arrow keys to scroll up to Plot1 Press ENTER Scroll down and Plot1 should be highlighted as at left Step 3: Graph the Data Press ZOOM Scroll down to 9:ZoomStat and press ENTER A graph of your data should appear in an appropriate window so that all data points are clearly visible (see below) Other than the first data point, our data look pretty linear. To determine a linear equation that fits the given data, we could do a variety of things. We could choose the first and last point and use those to write the equation. We could ignore the first point and just use two of the remaining points. Our calculator, however, will give us the best linear equation possible taking into account ALL the given data points. To find this equation, we use a process called LINEAR REGRESSION. Scottsdale Community College Page 60 Intermediate Algebra
Lesson 2a – Linear Functions and Applications Mini-Lesson FINDING THE LINEAR REGRESSION EQUATION Step 1: Access the Linear Regression section of your calculator Press STAT Scroll to the right one place to CALC Scroll down to 4:LinReg(ax+b) Your screen should look as the one at left Step 2: Determine the linear regression equation Press ENTER twice in a row to view the screen at left The calculator computes values for slope (a) and y- intercept (b) in what is called the equation of bestfit for your data. Identify these values and round to the appropriate places. Let’s say 2 decimals in this case. So, a = -4.43 and b = 191.24 Now, replace the a and b in y = ax + b with the rounded values to write the actual equation: y = -4.43x + 191.24 To write the equation in terms of initial variables, we would write W = -4.43t + 191.24 Once we have the equation figured out, it’s nice to graph it on top of our data to see how things match up. GRAPHING THE REGRESSION EQUATION ON TOP OF THE STAT PLOT Enter the Regression Equation with rounded values into Y= Press GRAPH You can see from the graph that the “best fit” line does not hit very many of the given data points. But, it will be the most accurate linear model for the overall data set. IMPORTANT NOTE: When you are finished graphing your data, TURN OFF YOUR PLOT1. Otherwise, you will encounter an INVALID DIMENSION error when trying to graph other functions. To do this: Press Y= Use your arrow keys to scroll up to Plot1 Press ENTER Scroll down and Plot1 should be UNhighlighted Scottsdale Community College Page 61 Intermediate Algebra
Page 1 and 2:
Scottsdale Community College Interm
Page 3 and 4:
Table of Contents Lesson 1a - Intro
Page 5 and 6:
Lesson 1a - Introduction to Functio
Page 7 and 8:
Name: _____________________ Date: _
Page 9 and 10:
Page 11 and 12:
Page 13 and 14: Lesson 1a - Introduction to Functio
Page 21 and 22: Name: _____________________ Date: _
Page 31 and 32: Lesson 1b - Linear Equations In the
Page 35 and 36: Lesson 1b - Linear Equations Mini-L
Page 47 and 48: Lesson 1b - Linear Equations Practi
Page 55 and 56: Lesson 2a - Linear Functions and Ap
Page 63: Lesson 2a - Linear Functions and Ap
Page 77 and 78: Lesson 2b - Functions and Function
Page 99 and 100: Lesson 3a - Introduction to Exponen
Page 115 and 116:
Lesson 3a - Introduction to Exponen
Page 117 and 118:
Name: _____________________ Date: _
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Name: _____________________ Date: _
Page 125 and 126:
Lesson 3b - More Exponential Functi
Page 127 and 128:
Name: _____________________ Date: _
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Name: _____________________ Date: _
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Name: _____________________ Date: _
Page 147 and 148:
Lesson 4a - Introduction to Logarit
Page 149 and 150:
Name: _____________________ Date: _
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Name: _____________________ Date: _
Page 161 and 162:
Page 163 and 164:
Name: _____________________ Date: _
Page 165 and 166:
Lesson 4b - More on Logarithms This
Page 167 and 168:
Name: _____________________ Date: _
Page 169 and 170:
Lesson 4b - More on Logarithms Mini
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Name: _____________________ Date: _
Page 179 and 180:
Lesson 4b - More on Logarithms Prac
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Name: _____________________ Date: _
Page 187 and 188:
Lesson 5a - Introduction to Quadrat
Page 189 and 190:
Name: _____________________ Date: _
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
Page 197 and 198:
Page 199 and 200:
Page 201 and 202:
Name: _____________________ Date: _
Page 203 and 204:
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
Name: _____________________ Date: _
Page 211 and 212:
Lesson 5b - Solving Quadratic Equat
Page 213 and 214:
Name: _____________________ Date: _
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
Page 221 and 222:
Page 223 and 224:
Page 225 and 226:
Page 227 and 228:
Page 229 and 230:
Page 231 and 232:
Name: _____________________ Date: _
Page 233 and 234:
Page 235 and 236:
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Name: _____________________ Date: _
Page 243 and 244:
Lesson 6a - Exponents and Rational
Page 245 and 246:
Name: _____________________ Date: _
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257 and 258:
Name: _____________________ Date: _
Page 259 and 260:
Page 261 and 262:
Page 263 and 264:
Page 265 and 266:
Name: _____________________ Date: _
Page 267 and 268:
Lesson 6b - Rational Exponents & Ra
Page 269 and 270:
Name: _____________________ Date: _
Page 271 and 272:
Lesson 6b - Rational Exponents and
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
Page 279 and 280:
Name: _____________________ Date: _
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Name: _____________________ Date: _
Page 287 and 288:
Appendix A: You Try Answers Lesson
Page 289 and 290:
Appendix A: You Try Answers You Try
Page 291 and 292:
Page 293 and 294:
show all

Intermediate Algebra – Student Workbook – Second Edition 2013

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?