Unit 7 Review

Find the equation of the figure shown.

• (x-1)²/16 - (y+2)²/4 = 1
• (x+1)²/16 - (y-2)²/4 = 1
• (y+2)²/4 - (x-1)²/16 = 1
• (x-1)²/4 - (y+2)²/2 = 1

What conic section is pictured?

• Circle
• Ellipse
• Parabola
• Hyperbola

What conic section is pictured?

• Circle
• Ellipse
• Parabola
• Hyperbola

Identify the center and the length of a and b of the ellipse.

• C: (0,0) a= 25, b=4

• C: (0,0) a= 4, b=25

• C: (0,0) a= 2, b=5

• C: (0,0) a= 5, b=2

Find the ordered pair for the focus of the parabola.

• (5, 4)

• (3, 6)

• (1, 4)

• (3, 2)

Find the equation of the figure shown.

• (x-5)² + (y-3)² = 25
• (x+5)²/4 + (y+3)²/9 = 1
• (x-5)²/2 + (y-3)²/3 = 1
• (x-5)²/4 + (y-3)²/9 = 1

The foci of an ellipse are located at (-2, 3) & (2, 3), where is the center?

• (0, 3)
• (3, 0)
• (-2, 0)
• (2, 0)

Write an equation for the ellipse with each set of characteristics. Then answer the question.
Vertices ( -7, -3), (13, - 3)
foci ( - 5, -3 ) , (11 , -3)
what is the a and b value of the ellipse?

• a = 10 , b = 6
• a = 6 , b = 10
• a = 36 , b = 100
• a = 100 , b = 36

Which is the equation to find c on an ellipse?

• c² = a² + b²
• c² = a² - b²
• 1/4d
• (x-h)² + (y-k)² = r²

 $\frac{1}{4}\left(x+3\right)^2-\ 5\ =\ y$ 
What is the equation of the directrix of this parabola?

• x = 4

• x = 2

• y = -4

• y = -6