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OpenStudy (anonymous):
PLEASE Help!!!!!!!! what is the axis of symmetry for y=4x^2-1 ?
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jimthompson5910 (jim_thompson5910):
use the formula x = -b/(2a)
OpenStudy (anonymous):
soo y=-4^2/(1) ?
jimthompson5910 (jim_thompson5910):
4x^2 - 1 is the same as 4x^2 + 0x - 1
OpenStudy (anonymous):
ohh okay so u just solve ?
jimthompson5910 (jim_thompson5910):
in this case, a = 4 and b = 0
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jimthompson5910 (jim_thompson5910):
plug those two in and evaluate
OpenStudy (anonymous):
0/4 = 0?
jimthompson5910 (jim_thompson5910):
yep
OpenStudy (anonymous):
its not correct .
jimthompson5910 (jim_thompson5910):
well it's x = 0, so there's another typo apparently
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jimthompson5910 (jim_thompson5910):
something you'll have to bring up with the teacher
OpenStudy (anonymous):
ohh okay.
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