Mathematics
21.12.2020 08:52
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Study the equation. y = x2 - 4x - 77 Write the equation in graphing form (vertex
Study the equation.
y = x2 - 4x - 77
Write the equation in graphing form (vertex form).
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y = x2 - 4x - 77
Write the equation in graphing form (vertex form).
ligittiger12806
4,9(65 marks)
The discriminant tells us how many real solutions there are. Since the parabola doesn't have any x-intercepts, the discriminant is less than zero, and therefore is answer A.
If a discriminant is:
>0, there are 2 x-intercepts
=0, there is 1 x-intercept
<0, there are no x-intercepts
If a discriminant is:
>0, there are 2 x-intercepts
=0, there is 1 x-intercept
<0, there are no x-intercepts
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