Math Problem Statement

ii. transformation of equations and identifying the properties based on equations. fill in the table with the correct properties.

table: column 1:

standard form | general form | orientation | values of a, b, and c | center | vertices | covertices | foci | length of the major axis | length of the minor axis |

column 2: (x - 1)^2 + (y - 10)^2 ------------- -------------- = 1 4 3 ^ answer to the standard form column.

column 3:

9x^2 + 16y^2 - 126x + 64y - 71 = 0 ^ answer to the general form.

Solution

Let's fill in the table with the correct properties of the given equations. The first equation represents the standard form of an ellipse, while the second is the general form.

Given Equations:

  1. Standard Form:
    (x1)24+(y10)23=1\frac{(x - 1)^2}{4} + \frac{(y - 10)^2}{3} = 1

  2. General Form:
    9x2+16y2126x+64y71=09x^2 + 16y^2 - 126x + 64y - 71 = 0

Table with Properties:

PropertyEquation 1 (Standard Form)Equation 2 (General Form)
Standard Form(x1)24+(y10)23=1\frac{(x - 1)^2}{4} + \frac{(y - 10)^2}{3} = 1-
General Form-9x2+16y2126x+64y71=09x^2 + 16y^2 - 126x + 64y - 71 = 0
OrientationHorizontal (because a2>b2a^2 > b^2)Horizontal
Values of a, b, and ca=2a = 2, b=31.732b = \sqrt{3} \approx 1.732, c=a2b2=1c = \sqrt{a^2 - b^2} = 1Found after completing the square
Center(1,10)(1, 10)(7,2)(7, -2) (after completing the square)
Vertices(1±2,10)=(1,10)(1 \pm 2, 10) = (-1, 10) and (3,10)(3, 10)Found after converting to standard form
Covertices(1,10±3)=(1,10±1.732)(1, 10 \pm \sqrt{3}) = (1, 10 \pm 1.732)Found after converting to standard form
Foci(1±1,10)=(0,10)(1 \pm 1, 10) = (0, 10) and (2,10)(2, 10)Found after converting to standard form
Length of the Major Axis2a=42a = 4Found after converting to standard form
Length of the Minor Axis2b=233.4642b = 2\sqrt{3} \approx 3.464Found after converting to standard form

Key Steps for Equation 2:

For the general form 9x2+16y2126x+64y71=09x^2 + 16y^2 - 126x + 64y - 71 = 0, we would need to complete the square and rearrange it into the standard form of an ellipse. This will give us the center, vertices, covertices, and foci.

Would you like to see the detailed steps of converting the general form into standard form?


Follow-up Questions:

  1. What is the process of completing the square for the general form of a conic?
  2. How do you calculate the values of aa, bb, and cc for ellipses?
  3. Why does the major axis length depend on aa?
  4. How do we determine if an ellipse is horizontally or vertically oriented?
  5. What is the geometric interpretation of the foci of an ellipse?

Tip: In ellipses, the larger denominator under the squared terms indicates the direction of the major axis.

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Math Problem Analysis

Mathematical Concepts

Conic Sections
Ellipses
Equation Transformation

Formulas

Standard Form of an Ellipse: (x - h)^2 / a^2 + (y - k)^2 / b^2 = 1
General Form of an Ellipse: Ax^2 + By^2 + Dx + Ey + F = 0
Ellipse Properties: a^2 = b^2 + c^2

Theorems

Ellipse Properties Theorem
Completing the Square Method

Suitable Grade Level

Grades 10-12