Mathematical+Reflections,+p+52+10-11

By 0Livi@ CH@uDHuRy
 * || || [[image:Screen_shot_2011-05-18_at_3.38.18_PM.png caption="Screen_shot_2011-05-18_at_3.38.18_PM.png"]] ||
 * Screen_shot_2011-05-18_at_3.38.18_PM.png || ||  ||

Answer :
 * 1. What are some of the advantages and disadvantages of using graphing calculators?**
 * || || [[image:Screen_shot_2011-05-18_at_3.36.24_PM.png width="505" height="355" caption="Screen_shot_2011-05-18_at_3.36.24_PM.png"]] ||
 * Screen_shot_2011-05-18_at_3.36.24_PM.png || ||  ||

Answer :
 * 2. Explain how to find the y-intercept of a linear relationship from a table, graph or equation.**
 * || || [[image:Screen_shot_2011-05-18_at_3.54.55_PM.png caption="Screen_shot_2011-05-18_at_3.54.55_PM.png"]] ||
 * Screen_shot_2011-05-18_at_3.54.55_PM.png || ||  ||


 * || || [[image:Screen_shot_2011-05-18_at_3.55.07_PM.png caption="Screen_shot_2011-05-18_at_3.55.07_PM.png"]] ||
 * Screen_shot_2011-05-18_at_3.55.07_PM.png || ||  ||


 * || || [[image:Screen_shot_2011-05-18_at_3.55.01_PM.png caption="Screen_shot_2011-05-18_at_3.55.01_PM.png"]] ||
 * Screen_shot_2011-05-18_at_3.55.01_PM.png || ||  ||


 * 3. Summarize what you know about the graph of the linear equation //y = mx// + //b//.**

Answer : On a graph, the equation would be a straight line in Quadrant I. When //x// is 0, //y// must be any value above 0. There must also be a linear relationship (or 'pattern').


 * 4.** **Check whether the point (-2, 13) is on the line //y=5-4x// by substituting the coordinates into the equation. Show and explain each step you take so that it is easy to see the order in which you did your calculations.**

Answer : First, write down the equation then change //x// to its correct value. Next, follow the M-D-A-S rule and solve 4 - 2. Lastly, solve for //x//, meaning 5-(-8). The result is -13, so //y// = -13. //y// = 5 - 4//x// //y// = 5 - 4 - 2 //y// = 5-(-8) //y// = -13 (Answer)

Answer : In this investigation, we learned about the advantages and disadvantages of using a graphing calculator. Also, we learned how to use many new functions available on the graphing calculator and how to mage graphs on FooPlot. We learned about the x and y-intercept of a graph and we also learned about the equation //y// = m//x// + b. ___
 * 5. Write a summary of this investigation.**