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Brums [2.3K]
3 years ago
11

Convert the equation to the standard form for a parabola by completing the square on x or y as appropriate.

Mathematics
2 answers:
RideAnS [48]3 years ago
4 0
Y² + 2 y - 2x - 3 = 0
x + 3 = y² + 2 y
2 x + 3 = y²  + 2 x + 1 - 1
2 x + 3 = ( y + 1 )² - 1
2 x + 3 + 1 = ( y + 1 )²
Answer:
2 ( x + 2 ) = ( y + 1 )²
Alekssandra [29.7K]3 years ago
3 0

Answer:

The given equation of Parabola is

y^2 + 2 y - 2 x - 3 = 0\\\\ (y+1)^2-1-2 x- 3=0\\\\  (y+1)^2=2 x +4\\\\ (y+1)^2=2(x+2)

The given parabola has vertex equal to (-2,-1).

If written in the form of

Y^2=4 A X

Where , A is the focus ,if the vertex of new parabola is (0,0).

4 A=2\\\\ A=\frac{2}{4}\\\\A=\frac{1}{2}

Coordinates of focus

  =(-2,-1+\frac{1}{2})\\\\=(-2,\frac{-1}{2})

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What does ‘b” represent in y=mx+b
tigry1 [53]

Answer:

In the equation y = mx + b for a straight line, the. number b is called the y-intercept of the line.

Step-by-step explanation:

5 0
3 years ago
A bicycle Rocco wants to buy is $282. If the sales tax rate is 4% of the total price how much sales tax will Rocco pay?
attashe74 [19]

Answer:

11.28

Step-by-step explanation:

282×4%=11.28 for sales tax

282+11.28= 293.28 would be total for bike and sales tax

3 0
3 years ago
The diameter of a circle is 10 in. Find its area in terms of pie.
kumpel [21]

Answer:

The diameter of the circle = 10 cm

The radius of the circle= 10/2= 5 cm

Step-by-step explanation:

Area of the circle = pi r^2

= pi 5^2

=3.14 *25

= 78.5 cm ^2

7 0
3 years ago
I need help with this, I’ll give brainliest!
Ivanshal [37]

Answer:

A

Step-by-step explanation:

Only graph A satisfies the domains provided

8 0
3 years ago
Can someone actually answer this question pls its my 3rd time posting it and ill ive gotten was wrong or answers that make no se
andre [41]

Answer:

(-2+-5) equals -7.

Because the signs are the same, we dont change it.

(3+5) equals 8. Same like the other equation, the signs are the same so we do not change it.

Now we do (-7+8) The answer will be 1. Lets use a little graph since its hard to explain.

-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8

Mark -7 anyway you want. (Circle it, draw a line under it, what ever you want.)

Now Move the line 8 times.

When you do that your line will stop at 1.

And thats how you do it.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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