Math  /  Algebra

QuestionGraph the hyperbola using the transverse axis, vertices, and co-vertices: 4y2x24=04 y^{2}-x^{2}-4=0
Use the green key point to change the orientation of the transverse axis, and the red key points to adjust the locations of the vertices and co-vertices.
Provide your answer below:

Studdy Solution

STEP 1

What is this asking? We need to graph a hyperbola, which is like two mirrored curves, and we'll use some special points to draw it accurately. Watch out! Don't mix up the *x* and *y* values!
Also, remember a hyperbola equation has a minus sign between the x2x^2 and y2y^2 terms.

STEP 2

1. Rewrite the equation
2. Find the center
3. Find aa and bb
4. Find the vertices
5. Find the co-vertices
6. Graph the hyperbola

STEP 3

Let's **rewrite** the equation 4y2x24=04y^2 - x^2 - 4 = 0 in standard form.
We want it to look like y2a2x2b2=1\frac{y^2}{a^2} - \frac{x^2}{b^2} = 1.
First, **add** 4 to both sides: 4y2x2=44y^2 - x^2 = 4.

STEP 4

Now, **divide** both sides by 4 to get a 1 on the right side: 4y24x24=44\frac{4y^2}{4} - \frac{x^2}{4} = \frac{4}{4}, which simplifies to y21x24=1\frac{y^2}{1} - \frac{x^2}{4} = 1.
Awesome!

STEP 5

The center of our hyperbola is at (h,k)(h, k).
Since we don't have any shifts in our equation, the **center** is at (0,0)(0, 0).
Boom!

STEP 6

From our equation y21x24=1\frac{y^2}{1} - \frac{x^2}{4} = 1, we see that a2=1a^2 = 1 and b2=4b^2 = 4.
Taking the **square root** of both sides gives us a=1a = 1 and b=2b = 2.
These values will help us find the vertices and co-vertices!

STEP 7

Since the y2y^2 term is positive, the **transverse axis** is vertical.
The vertices are aa units above and below the center.
So, our **vertices** are at (0,1)(0, 1) and (0,1)(0, -1).

STEP 8

The co-vertices are bb units to the left and right of the center.
Since b=2b = 2, our **co-vertices** are at (2,0)(2, 0) and (2,0)(-2, 0).

STEP 9

Now, **plot** the center, vertices, and co-vertices on the graph.

STEP 10

Draw a rectangle using the vertices and co-vertices.
The **asymptotes** are the lines that pass through the diagonals of this rectangle.

STEP 11

Finally, **sketch** the hyperbola curves, making sure they approach the asymptotes but never touch them.
The curves pass through the vertices and open upwards and downwards because the y2y^2 term is positive.

STEP 12

The hyperbola is centered at (0,0)(0, 0), has vertices at (0,1)(0, 1) and (0,1)(0, -1), and co-vertices at (2,0)(2, 0) and (2,0)(-2, 0).
The transverse axis is vertical.

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