What is the possible discriminant of the graph?
http://learn.flvs.net/webdav/assessment_images/educator_algebra2_v10/5_07g_04.gif
–13
0
16
21
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OpenStudy (anonymous):
@jim_thompson5910
OpenStudy (anonymous):
@lgbasallote
jimthompson5910 (jim_thompson5910):
i get an error when I click the link
OpenStudy (anonymous):
oh okay 1 sec
OpenStudy (anonymous):
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jimthompson5910 (jim_thompson5910):
Looking at the graph, what are the x-intercepts?
OpenStudy (anonymous):
are none
OpenStudy (anonymous):
wait so does that mean its 0?
jimthompson5910 (jim_thompson5910):
not quite
OpenStudy (anonymous):
i knoe d=b^2-4ac ....i just dont know the equation of the graph -.-
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jimthompson5910 (jim_thompson5910):
the rule is this
if the discriminant is positive, then you'll have 2 real solutions
if the discriminant is zero, then you'll have 1 real solution (that repeats itself twice)
if the discriminant is negative, then you'll have no real solutions
Note: solutions correspond to x-intercepts
OpenStudy (anonymous):
so the discriminant is -13?
jimthompson5910 (jim_thompson5910):
you got it
OpenStudy (anonymous):
thankss :))
jimthompson5910 (jim_thompson5910):
no x-intercepts ---> no real solutions --> negative discriminant
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