Find the Asymptotes x^2-y^2-8x-10y-10=0

$x^{2} - y^{2} - 8 x - 10 y - 10 = 0$

Step 1

Find the standard form of the hyperbola.

Add $10$ to both sides of the equation.

$x^{2} - y^{2} - 8 x - 10 y = 10$

Complete the square for $x^{2} - 8 x$ .

Use the form $a x^{2} + b x + c$ , to find the values of $a$ , $b$ , and $c$ .

$a = 1$

$b = - 8$

$c = 0$

Consider the vertex form of a parabola.

$a {(x + d)}^{2} + e$

Find the value of $d$ using the formula $d = \frac{b}{2 a}$ .

Substitute the values of $a$ and $b$ into the formula $d = \frac{b}{2 a}$ .

$d = \frac{- 8}{2 \cdot 1}$

Cancel the common factor of $- 8$ and $2$ .

Factor $2$ out of $- 8$ .

$d = \frac{2 \cdot - 4}{2 \cdot 1}$

Cancel the common factors.

Factor $2$ out of $2 \cdot 1$ .

$d = \frac{2 \cdot - 4}{2 (1)}$

Cancel the common factor.

$d = \frac{2 \cdot - 4}{2 \cdot 1}$

Rewrite the expression.

$d = \frac{- 4}{1}$

Divide $- 4$ by $1$ .

$d = - 4$

Find the value of $e$ using the formula $e = c - \frac{b^{2}}{4 a}$ .

Substitute the values of $c$ , $b$ and $a$ into the formula $e = c - \frac{b^{2}}{4 a}$ .

$e = 0 - \frac{{(- 8)}^{2}}{4 \cdot 1}$

Simplify the right side.

Simplify each term.

Raise $- 8$ to the power of $2$ .

$e = 0 - \frac{64}{4 \cdot 1}$

Multiply $4$ by $1$ .

$e = 0 - \frac{64}{4}$

Divide $64$ by $4$ .

$e = 0 - 1 \cdot 16$

Multiply $- 1$ by $16$ .

$e = 0 - 16$

Subtract $16$ from $0$ .

$e = - 16$

Substitute the values of $a$ , $d$ , and $e$ into the vertex form ${(x - 4)}^{2} - 16$ .

${(x - 4)}^{2} - 16$

Substitute ${(x - 4)}^{2} - 16$ for $x^{2} - 8 x$ in the equation $x^{2} - y^{2} - 8 x - 10 y = 10$ .

${(x - 4)}^{2} - 16 - y^{2} - 10 y = 10$

Move $- 16$ to the right side of the equation by adding $16$ to both sides.

${(x - 4)}^{2} - y^{2} - 10 y = 10 + 16$

Complete the square for $- y^{2} - 10 y$ .

Use the form $a x^{2} + b x + c$ , to find the values of $a$ , $b$ , and $c$ .

$a = - 1$

$b = - 10$

$c = 0$

Consider the vertex form of a parabola.

$a {(x + d)}^{2} + e$

Find the value of $d$ using the formula $d = \frac{b}{2 a}$ .

Substitute the values of $a$ and $b$ into the formula $d = \frac{b}{2 a}$ .

$d = \frac{- 10}{2 \cdot - 1}$

Simplify the right side.

Cancel the common factor of $- 10$ and $2$ .

Factor $2$ out of $- 10$ .

$d = \frac{2 \cdot - 5}{2 \cdot - 1}$

Move the negative one from the denominator of $\frac{- 5}{- 1}$ .

$d = - 1 \cdot - 5$

Rewrite $- 1 \cdot - 5$ as $- - 5$ .

$d = - - 5$

Multiply $- 1$ by $- 5$ .

$d = 5$

Find the value of $e$ using the formula $e = c - \frac{b^{2}}{4 a}$ .

Substitute the values of $c$ , $b$ and $a$ into the formula $e = c - \frac{b^{2}}{4 a}$ .

$e = 0 - \frac{{(- 10)}^{2}}{4 \cdot - 1}$

Simplify the right side.

Simplify each term.

Raise $- 10$ to the power of $2$ .

$e = 0 - \frac{100}{4 \cdot - 1}$

Multiply $4$ by $- 1$ .

$e = 0 - \frac{100}{- 4}$

Divide $100$ by $- 4$ .

$e = 0 - - 25$

Multiply $- 1$ by $- 25$ .

$e = 0 + 25$

Add $0$ and $25$ .

$e = 25$

Substitute the values of $a$ , $d$ , and $e$ into the vertex form $- {(y + 5)}^{2} + 25$ .

$- {(y + 5)}^{2} + 25$

Substitute $- {(y + 5)}^{2} + 25$ for $- y^{2} - 10 y$ in the equation $x^{2} - y^{2} - 8 x - 10 y = 10$ .

${(x - 4)}^{2} - {(y + 5)}^{2} + 25 = 10 + 16$

Move $25$ to the right side of the equation by adding $25$ to both sides.

${(x - 4)}^{2} - {(y + 5)}^{2} = 10 + 16 - 25$

Simplify $10 + 16 - 25$ .

Add $10$ and $16$ .

${(x - 4)}^{2} - {(y + 5)}^{2} = 26 - 25$

Subtract $25$ from $26$ .

${(x - 4)}^{2} - {(y + 5)}^{2} = 1$

Step 2

This is the form of a hyperbola. Use this form to determine the values used to find the asymptotes of the hyperbola.

$\frac{{(x - h)}^{2}}{a^{2}} - \frac{{(y - k)}^{2}}{b^{2}} = 1$

Step 3

Match the values in this hyperbola to those of the standard form. The variable $h$ represents the x-offset from the origin, $k$ represents the y-offset from origin, $a$ .

$a = 1$

$b = 1$

$k = - 5$

$h = 4$

Step 4

The asymptotes follow the form $y = \pm \frac{b (x - h)}{a} + k$ because this hyperbola opens left and right.

$y = \pm 1 \cdot (x - (4)) - 5$

Step 5

Simplify to find the first asymptote.

Remove parentheses.

$y = 1 \cdot (x - (4)) - 5$

Simplify $1 \cdot (x - (4)) - 5$ .

Simplify each term.

Multiply $x - (4)$ by $1$ .

$y = x - (4) - 5$

Multiply $- 1$ by $4$ .

$y = x - 4 - 5$

Subtract $5$ from $- 4$ .

$y = x - 9$

Step 6

Simplify to find the second asymptote.

Remove parentheses.

$y = - 1 \cdot (x - (4)) - 5$

Simplify $- 1 \cdot (x - (4)) - 5$ .

Simplify each term.

Multiply $- 1$ by $4$ .

$y = - 1 \cdot (x - 4) - 5$

Apply the distributive property.

$y = - 1 x - 1 \cdot - 4 - 5$

Rewrite $- 1 x$ as $- x$ .

$y = - x - 1 \cdot - 4 - 5$

Multiply $- 1$ by $- 4$ .

$y = - x + 4 - 5$

Subtract $5$ from $4$ .

$y = - x - 1$

Step 7

This hyperbola has two asymptotes.

$y = x - 9, y = - x - 1$

Step 8

The asymptotes are $y = x - 9$ and $y = - x - 1$ .

Asymptotes: $y = x - 9, y = - x - 1$

Step 9

Find the Asymptotes x^2-y^2-8x-10y-10=0

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