Question 1127572
{{{y=a(x-3)(x-9)}}}


{{{a=y/((x-3)(x-9))}}}


The given point of (10,-7):

{{{a=-7/((10-3)(10-9))}}}

{{{a=-7/(7*1)}}}

{{{a=-1}}}


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{{{y=-(x-3)(x-9)}}}----------the equation in factored form