 |
| 1 | |
Which of the following graphs is a downward-opening parabola with a vertex at (2, 3)? |
| | A) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/FOM10_KeyQuiz6_3_question1a.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (37.0K)</a>]]> |
| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/FOM10_KeyQuiz6_3_question1b.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (37.0K)</a>]]> |
| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/FOM10_KeyQuiz6_3_question1c.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (37.0K)</a>]]> |
| | D) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/FOM10_KeyQuiz6_3_question1d.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (37.0K)</a>]]> |
|
|
|
| 2 | |
What is the axis of symmetry of the parabola shown?
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/FOM10_KeyQuiz6_3_question2.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (37.0K)</a>]]> |
| | A) | x = 4 |
| | B) | y = 4 |
| | C) | x = –4 |
| | D) | x = 3 and x = 5 |
|
|
|
| 3 | |
The x-intercept(s) of the parabola shown are:
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/FOM10_KeyQuiz6_3_question3.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (37.0K)</a>]]> |
| | A) | x = 6 and x = –2 |
| | B) | x = -2 |
| | C) | x = -6 and x = 2 |
| | D) | x = –6 |
|
|
|
| 4 | |
Which of the graphs shown is a parabola with all of the following characteristics:
• minimum: (3, -1)
• x-intercepts: 2 and 4
• y-intercept: 8 |
| | A) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/FOM10_KeyQuiz6_3_question4a.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (37.0K)</a>]]> |
| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/FOM10_KeyQuiz6_3_question4b.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (37.0K)</a>]]> |
| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/FOM10_KeyQuiz6_3_question4c.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (37.0K)</a>]]> |
| | D) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/FOM10_KeyQuiz6_3_question4d.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (37.0K)</a>]]> |
|
|
|
| 5 | |
Is it possible for downward-opening parabolas to have only one x-intercept? Why or why not? |
| | A) | No, it is not possible; all parabolas always have two different x-intercepts. |
| | B) | It is possible, if the vertex is on the x-axis. |
| | C) | It is possible, if the vertex is on the y-axis. |
| | D) | It is impossible because parabolas must be symmetric and if they cross the x-axis going up they must cross it again going down, resulting in two x-intercepts. |
|
|
.