rayray9471
01.07.2019 •
Mathematics
Rewrite the equation y^2 - 2x + 2y-5=0 in standard form. determine the focus and directrix
Solved
Show answers
More tips
- S Science and Technology Discovering the Anatomy of an LCD TV Screen...
- F Family and Home How to Raise a Genius? Discover the Secrets Here...
- F Food and Cooking How to Properly Cook Buckwheat?...
- H Health and Medicine How to Tan in a Tanning Bed? Tips and Recommendations...
- S Style and Beauty How to Sew a Balloon Skirt: Detailed Tutorial and Tips on Choosing the Right Fabric...
- P Philosophy Personal attitude towards Confession: how to prepare and undergo the procedure correctly?...
- F Food and Cooking How to Make Cottage Cheese at Home: Simple and Quick Recipe with Step By Step Instructions...
- H Health and Medicine Which Water Are You Drinking? Is it Worth Buying Bottled Water?...
- H Health and Medicine What Makes a Man a Man?...
- H Health and Medicine What to Take with You to the Maternity Hospital?...
Answers on questions: Mathematics
- M Mathematics Please please help I have little money and I just need help with this question to me happy :( no false answer and questions and statements in comments. (23 points)...
- M Mathematics Bdhxbrndhcyshrbvrvr tvdndud...
- M Mathematics A 120 degree sector of a circle has an area of 67 square centimeters. to the nearest centimeter, what is the diameter of the circle?...
- M Mathematics What is the area of a square with sides of length 21/2 units...
- M Mathematics Which of the following is true about this graph...
- M Mathematics An item is regularly priced at $95. It is on sale for 55% off the regular price. $...
- M Mathematics In the following diagram line m is parallel to line n and line q intersects the parallel lines at angle A and angle B. If angle A =4x+28degrees and angle B =2x+68degrees....
- M Mathematics fill in the blanks pls...
- M Mathematics Help please...............
- M Mathematics ILL GIVE YOU BRAINLIST { have to get it right } !! What type of slope is this line?...
Ответ:
Answer : option D
We apply completing the square method
Move all the y terms on one side
y^2 +2y = 2x + 5
In completing the square method , we take coefficient of y then divide it by 2 and square it
2/2 =1 then 1^2 = 1
Add it on both sides
Solve for x
(divide by 2 on both sides)
Vertex is (h,k) that is (-3,-1). h= -3 and k = -1
The value of a= 1/2
Plug in 1/2 for 'a'
so P = 1/2
Focus = (h+p, k)
h= -3 and k = -1, p = 1/2
Directrix x=(h - P)
Option D is correct
Ответ:
OMG THX
Step-by-step explanation: