[color=#000000]In the applet below, line [i]m[/i] is about to be dilated about point [i]A. [/i]The [i]scale factor[/i] of the dilation is given by the parameter [i]k[/i]. (See below.) [i] [/i][/color][br][br][color=#980000]1) Show the image of line m under a dilation about point [i]A[/i] with scale factor k. [br]2) What does the image of this line look like? ([i]Be specific![/i]) [br] [/color] -It looks like a line.[color=#980000][br]3) Set the slider k = 5 to start. Then move the slider slowly to the left. Observe.[br] [/color][color=#980000] What happens to the image of m as k approaches zero? [br] [/color]- When moving the slider to the left the image moves closer to the image of dilation.[color=#980000][br]4) What happens to the image of the line if k = 1?[br] [/color]- When the image of line is at k=1 the image lies on top as the pre-image and it is congruent.[color=#980000][br]5) What happens to the image of the line if k = 0?[br] [/color]- When the image is at k=0 the image is on the center of dilation.[color=#980000][br]6) What happens to the image of the line if k < 0?[/color][br] -When the image is k> 0 it reflects over the center of dilation.[br][br]Change the locations of point [i]A[/i] and the original line [i]m[/i]. Repeat steps 1-5 again. [br][br][color=#980000]6) Now, click the "Check This Out!" checkbox. Interact with the new slider you see. [br] Carefully observe what happens here. [br][/color] - They are congruent because the lines are parallel. [br][br][i][color=#1e84cc][b]Please answer the questions that appear below the applet as well ! [/b][/color][/i]
[b][color=#980000]Questions: [/color][br][br][/b][color=#000000]1) What happens if the original line [i]m[/i] passes through point [i]A[/i]? [br] More specifically, what does the image of [i]m[/i] look like if [i]m[/i] passes through [i]A[/i]? [br] [/color][color=#0000ff]- If the original lines pass through point A they both line up because they are congruent.[/color][color=#000000][br]2) What happens if the original line [i]m[/i] does [b]not[/b] pass through [i]A? [br][/i] What does the image of [i]m[/i] look like if [i]m[/i] does [b]not[/b] pass through [i]A[/i]? [br] [/color][color=#0000ff]- The image becomes parallel to the pre image. [/color][color=#000000][br]3) Complete the following statement by filling in each blank with an appropriate word[br] to make a true statement: [/color][br][br] [color=#0000ff][b]A dilation maps a ___[u]line[/u]____ not passing through the center of the[br][br][/b] [b]dilation to another ____[u]line[/u]____ that is __parallel___ to the original[br][br][/b] [b]___[u]pre image[/u]___. If, however, the original ___[u]pre image[/u]__ passes through the [br][br][/b] [b]____[u]center[/u]_____ of the dilation, the image of this line is the ___[u]same[/u]___ as[br][br][/b] [b]the original _____[u]line[/u]___. [/b][/color]