are quadratic equations and have a parabolic form, which means the have a vertex. The x coordinate of the vertex is given by the following expression 
. When b is equal to zero, the vertex of the function will always be the y-intercept, therefore the correct answer is the third one.For all functions of the form f(x) = ax^2 + bx + c, which is true when b=0
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Mathematics, 14.07.2020 14:01 mqturner1989Kedie
For all functions of the form f(x) = ax^2 + bx + c, which is true when b=0
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