Site MapHelpFeedbackKey Quiz 6.2
Key Quiz 6.2
(See related pages)

1
Why must a ≠ 0 for the equation y = ax2 + bx + c to be quadratic?
A)If a were equal to 0 then the equation would not be symmetric.
B)If a were equal to 0 then the graph of the relation would pass through (0, 0).
C)If a were equal to 0 then the equation would be y = bx + c , which is the equation of a straight line.
D)If a were equal to 0 then the equation would be y = x2 + bx + c , which is the equation of a straight line.
2
Which of the following relations are quadratic?
<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/mhr_fom10_key6_2_q2.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"> (4.0K)</a>
A)I only.
B)I and III
C)II and III
D)I, II, and III
3
Find the quadratic curve of best fit for the following data:
<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/mhr_fom10_key6_2_q3.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"> (7.0K)</a>
A)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/mhr_fom10_key6_2_q3_a.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"> (2.0K)</a>
B)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/mhr_fom10_key6_2_q3_b.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"> (2.0K)</a>
C)y = 37x - 400.2
D)y = 5x2 - 3x - 2
4
Harrison took his pulse once an hour. He collected the following data:
<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/mhr_fom10_key6_2_q4.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"> (12.0K)</a>
The quadratic curve of best fit is:
A)y = 2x2 + 12.7x + 130.4
B)y = -1.3x + 149.1
C)y = 130.4x2 + 12.7x - 2
D)y = -2x2 + 12.7x + 130.4
5
A soccer ball is dropped from the seventh story of an apartment building. Its height in metres above the ground from the time it is released until the time it hits the ground is summarized in the table shown:
<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/mhr_fom10_key6_2_q5.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"> (11.0K)</a>
Find the curve of best fit for this data and use it to predict how high (to the nearest tenth of a second) the ball was 2.5 s after it was released.
A)25.0 m
B)48.4 m
C)57.0 m
D)65 m





To learn more about the book this website supports, please visit its Information Center.
(c)2007 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Notice.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.


Foundations of Mathematics 10Online Learning Center

Home > Chapter 6 > Key Quiz 6.2