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3 years ago

Help me answer both pleaseeeee

1 answer:

Hatshy [7]3 years ago

8 0

B) I took the quiz and got a 100%

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You would use the distance formula and get square root of 101

The answer is <span>b) (image #1)
</span>

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3 years ago

gogolik [260]

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Lerok [7]

A line perpendicular to y = 2x - 1 must have the slope -1/2 (negative reciprocal of 2).

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2 years ago

Basile [38]

${\qquad\qquad\huge\underline{{\sf Answer}}}$

Let's solve ~

Equation of directrix is : y = 1, so we can say that it's a parabola of form : -

$\qquad \sf \dashrightarrow \: (x - h) {}^{2} = 4a(y - k)$

a = half the perpendicular distance between directrix and focus = 1/2(5 - 1) = 1/2(4) = 2

and since the focus is above the directrix, it's a parabola with upward opening.

$\qquad \sf \dashrightarrow \: (x - ( - 4)) {}^{2} = 4(2)(y - 5)$

$\qquad \sf \dashrightarrow \: (x + 4) {}^{2} = 8(y - 5)$

$\qquad \sf \dashrightarrow \: {x}^{2} + 8x + 16 = 8y - 40$

$\qquad \sf \dashrightarrow \: 8y = {x}^{2} + 8x + 56$

$\qquad \sf \dashrightarrow \: y = \cfrac{1}{8} {x}^{2} + x + 7$

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1 year ago

Sveta_85 [38]

The only line that contains point P is 'n'.

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3 years ago