Mathematics, 30.12.2019 14:31, lisa123465
What is the focus of the parabola given by -1/4(y+2)^2=(x-1)
Answers: 3
![\bf -\cfrac{1}{4}(y+2)^2=(x-1)\implies (y+2)^2={-4}(x-1) \\\\\\\ [y-(-2)]^2=-4(x-1)\quad \begin{cases} k=-2\\ h=1\\ 4p=-4 \end{cases}\implies 4p=-4\implies \boxed{p=-1}](/tpl/images/0437/3031/0a5bc.png)
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