determine the equation of a quadratic function
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determine the equation of a quadratic function
conditions:x-intercept 3,and passing through the point (1,-2)
conditions:x-intercept 3,and passing through the point (1,-2)
It sounds like that it passes thru 3 points: (0,0),(3,0),(1,-2)
From the first 2 points,it can be expressed in the form of y = ax(x-3)
It passes thru (1 -2):-2 = a*1*(1-3)
a = 1
y = x(x-3)
From the first 2 points,it can be expressed in the form of y = ax(x-3)
It passes thru (1 -2):-2 = a*1*(1-3)
a = 1
y = x(x-3)
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