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Mathematics 10 Online
OpenStudy (anonymous):

Without drawing the graph of the equation, determine how many points the parabola has in common with the x-axis and whether its vertex lies above, on, or below the x-axis. y = 3x^2 – 12x + 12 A. 1 point in common; vertex on x-axis B. 2 points in common; vertex below x-axis C. 2 points in common; vertex above x-axis D. no points in common; vertex above x-axis

ganeshie8 (ganeshie8):

start with finding \(b^2-4ac\)

OpenStudy (anonymous):

somebody said it ws D so i just wanna see if there right

ganeshie8 (ganeshie8):

3x^2 – 12x + 12 ^ ^ ^ a b c

OpenStudy (anonymous):

b?

ganeshie8 (ganeshie8):

how

OpenStudy (anonymous):

my sistr said

ganeshie8 (ganeshie8):

its not b

ganeshie8 (ganeshie8):

lets find it step by step

ganeshie8 (ganeshie8):

what do you get for \(b^2 - 4ac\) ?

OpenStudy (anonymous):

ohh nevermind i found it out its C

ganeshie8 (ganeshie8):

its not C either

ganeshie8 (ganeshie8):

lets go step by step ok

OpenStudy (anonymous):

ohh i mean A i was looking at A ten i looked @ c

ganeshie8 (ganeshie8):

lol A is correct.

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