vertex of y=3(x-6)(x-3)

timer Asked: Jul 2nd, 2014
account_balance_wallet $5

Question Description

how do I make a t chart with this equation?

Tutor Answer

Alex Z
School: UIUC

To solve this with t-chart, simply pick some x-values and plug them into the original formula to calculate the corresponding y-values (see example below).  Once you have that, then just look for the two zeros and average them.  In this case, 3 and 6...the average of which is you know the x-value of the vertex is at 4.5.  Then plug that into the original equation to get -6.75.  Thus, the vertex is (4.5 , -6.75)

    3  |   0
    4  |  -6
    5  |  -6
    6  |   0

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