Math Problem Statement
the point (-3, 8) lies on the graph of y = f(x). Using mapping notation, state the coordinates of of this point after the following transformation: y + 1 = f(1/4x - 1)
Solution
The given transformation is .
Step-by-Step Breakdown:
-
Horizontal Transformation:
- represents two transformations:
- Horizontal stretch by a factor of 4. To account for this, multiply the -coordinate by 4.
- Horizontal shift to the right by 1. To account for this, add 1 to the -coordinate.
Applying this to the point :
- represents two transformations:
-
Vertical Transformation:
- indicates a vertical shift down by 1. So, subtract 1 from the -coordinate.
Applying this to the point :
Final Coordinates:
After the transformation, the new coordinates of the point are .
Would you like more details on the transformations, or do you have any questions?
Here are 5 related questions to explore:
- What happens to the point if the transformation includes a reflection across the y-axis?
- How would the transformation affect the slope of a line passing through the original point?
- What is the effect of applying only the horizontal transformation to the point?
- How do you reverse a vertical shift in a transformation equation?
- What happens if we change the stretch factor from 4 to another number?
Tip: Always handle horizontal transformations (stretch/compression and shifts) before applying vertical changes!
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Math Problem Analysis
Mathematical Concepts
Transformations
Functions
Coordinate Geometry
Formulas
Horizontal transformation: f(ax + b) → multiply x-coordinate by 1/a and shift by -b/a
Vertical transformation: f(x) + k → shift y-coordinate by -k
Theorems
Function transformation rules
Coordinate geometry transformations
Suitable Grade Level
Grades 9-11
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