Difference between revisions of "1969 AHSME Problems/Problem 7"

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== See also ==
 
== See also ==
{{AHSME box|year=1969|num-b=6|num-a=28}
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[[Category: Introductory Algebra Problems]]
 
[[Category: Introductory Algebra Problems]]
 
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{{MAA Notice}}

Revision as of 17:15, 30 September 2014

Problem

If the points $(1,y_1)$ and $(-1,y_2)$ lie on the graph of $y=ax^2+bx+c$, and $y_1-y_2=-6$, then $b$ equals:

$\text{(A) } -3\quad \text{(B) } 0\quad \text{(C) } 3\quad \text{(D) } \sqrt{ac}\quad \text{(E) } \frac{a+c}{2}$

Solution

$\fbox{A}$

See also

1969 AHSME (ProblemsAnswer KeyResources)
Preceded by
Problem 6
Followed by
Problem 8
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
All AHSME Problems and Solutions

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