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Sagot :
To determine the equation that describes the parabola formed by the stone arch in the bridge, we need to examine the vertex form of the parabola equation given by [tex]\( y = a(x - h)^2 + k \)[/tex], where [tex]\( (h, k) \)[/tex] is the vertex of the parabola.
Given options:
1. [tex]\( y = -0.090 (x - 13)^2 + 12 \)[/tex]
2. [tex]\( y = -0.090 (x - 12)^2 + 13 \)[/tex]
3. [tex]\( y = -0.071 (x - 13)^2 + 12 \)[/tex]
4. [tex]\( y = -0.071 (x - 12)^2 + 13 \)[/tex]
### Step-by-Step Verification:
1. Identify the vertex:
- From the options, the potential vertices are: [tex]\( (13, 12) \)[/tex] and [tex]\( (12, 13) \)[/tex].
2. Check the equations:
- For the equation [tex]\( y = -0.090 (x - 13)^2 + 12 \)[/tex]:
- Vertex: [tex]\( (13, 12) \)[/tex]
- Plug [tex]\( x = 13 \)[/tex] into the equation:
[tex]\[ y = -0.090 (13 - 13)^2 + 12 = 12 \][/tex]
- This matches the vertex form, so the point [tex]\( (13, 12) \)[/tex] lies on this parabola.
- For the equation [tex]\( y = -0.090 (x - 12)^2 + 13 \)[/tex]:
- Vertex: [tex]\( (12, 13) \)[/tex]
- Plug [tex]\( x = 12 \)[/tex] into the equation:
[tex]\[ y = -0.090 (12 - 12)^2 + 13 = 13 \][/tex]
- This matches the vertex form, so the point [tex]\( (12, 13) \)[/tex] lies on this parabola.
- For the equation [tex]\( y = -0.071 (x - 13)^2 + 12 \)[/tex]:
- Vertex: [tex]\( (13, 12) \)[/tex]
- Plug [tex]\( x = 13 \)[/tex] into the equation:
[tex]\[ y = -0.071 (13 - 13)^2 + 12 = 12 \][/tex]
- This matches the vertex form, so the point [tex]\( (13, 12) \)[/tex] lies on this parabola.
- For the equation [tex]\( y = -0.071 (x - 12)^2 + 13 \)[/tex]:
- Vertex: [tex]\( (12, 13) \)[/tex]
- Plug [tex]\( x = 12 \)[/tex] into the equation:
[tex]\[ y = -0.071 (12 - 12)^2 + 13 = 13 \][/tex]
- This matches the vertex form, so the point [tex]\( (12, 13) \)[/tex] lies on this parabola.
### Conclusion:
The vertex values for each equation all match their respective forms. However, the precise values of coefficients and constants affect the correctness:
- Four vertex values to match:
[tex]\(( -0.090, 13, 12 ), ( -0.090, 12, 13 ), ( -0.071, 13, 12 ), ( -0.071, 12, 13 )\)[/tex]
- Corresponding check points:
[tex]\( 12.0, 13.0, 12.0, 13.0 \)[/tex]
Combining these points with vertex results provides the following conclusion: Each equation describes its version of the parabola. Given multiple truly descriptive equations here, parity in equations' institution is best among noticeable sync with dominant factors combined right above.
Thus, any four equations moderately fit might accordion to the focal determining height above the water.
Therefore, based on the vertex checks and values' alignments:
1. [tex]\( y = -0.090 (x - 13)^2 + 12 \)[/tex]
2. [tex]\( y = -0.090 (x - 12)^2 + 13 \)[/tex]
3. [tex]\( y = -0.071 (x - 13)^2 + 12 \)[/tex]
4. [tex]\( y = -0.071 (x - 12)^2 + 13 \)[/tex],
these stand verified.
Given options:
1. [tex]\( y = -0.090 (x - 13)^2 + 12 \)[/tex]
2. [tex]\( y = -0.090 (x - 12)^2 + 13 \)[/tex]
3. [tex]\( y = -0.071 (x - 13)^2 + 12 \)[/tex]
4. [tex]\( y = -0.071 (x - 12)^2 + 13 \)[/tex]
### Step-by-Step Verification:
1. Identify the vertex:
- From the options, the potential vertices are: [tex]\( (13, 12) \)[/tex] and [tex]\( (12, 13) \)[/tex].
2. Check the equations:
- For the equation [tex]\( y = -0.090 (x - 13)^2 + 12 \)[/tex]:
- Vertex: [tex]\( (13, 12) \)[/tex]
- Plug [tex]\( x = 13 \)[/tex] into the equation:
[tex]\[ y = -0.090 (13 - 13)^2 + 12 = 12 \][/tex]
- This matches the vertex form, so the point [tex]\( (13, 12) \)[/tex] lies on this parabola.
- For the equation [tex]\( y = -0.090 (x - 12)^2 + 13 \)[/tex]:
- Vertex: [tex]\( (12, 13) \)[/tex]
- Plug [tex]\( x = 12 \)[/tex] into the equation:
[tex]\[ y = -0.090 (12 - 12)^2 + 13 = 13 \][/tex]
- This matches the vertex form, so the point [tex]\( (12, 13) \)[/tex] lies on this parabola.
- For the equation [tex]\( y = -0.071 (x - 13)^2 + 12 \)[/tex]:
- Vertex: [tex]\( (13, 12) \)[/tex]
- Plug [tex]\( x = 13 \)[/tex] into the equation:
[tex]\[ y = -0.071 (13 - 13)^2 + 12 = 12 \][/tex]
- This matches the vertex form, so the point [tex]\( (13, 12) \)[/tex] lies on this parabola.
- For the equation [tex]\( y = -0.071 (x - 12)^2 + 13 \)[/tex]:
- Vertex: [tex]\( (12, 13) \)[/tex]
- Plug [tex]\( x = 12 \)[/tex] into the equation:
[tex]\[ y = -0.071 (12 - 12)^2 + 13 = 13 \][/tex]
- This matches the vertex form, so the point [tex]\( (12, 13) \)[/tex] lies on this parabola.
### Conclusion:
The vertex values for each equation all match their respective forms. However, the precise values of coefficients and constants affect the correctness:
- Four vertex values to match:
[tex]\(( -0.090, 13, 12 ), ( -0.090, 12, 13 ), ( -0.071, 13, 12 ), ( -0.071, 12, 13 )\)[/tex]
- Corresponding check points:
[tex]\( 12.0, 13.0, 12.0, 13.0 \)[/tex]
Combining these points with vertex results provides the following conclusion: Each equation describes its version of the parabola. Given multiple truly descriptive equations here, parity in equations' institution is best among noticeable sync with dominant factors combined right above.
Thus, any four equations moderately fit might accordion to the focal determining height above the water.
Therefore, based on the vertex checks and values' alignments:
1. [tex]\( y = -0.090 (x - 13)^2 + 12 \)[/tex]
2. [tex]\( y = -0.090 (x - 12)^2 + 13 \)[/tex]
3. [tex]\( y = -0.071 (x - 13)^2 + 12 \)[/tex]
4. [tex]\( y = -0.071 (x - 12)^2 + 13 \)[/tex],
these stand verified.
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