Here are the essential concepts you must grasp in order to answer the question correctly.
Standard Functions
Standard functions are basic functions like linear, quadratic, exponential, and trigonometric functions, which serve as the foundation for more complex graphs. Understanding their shapes and properties is crucial for graphing transformations. For example, the graph of y = x is a straight line, which can be transformed by scaling, translating, or reflecting.
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Introduction to Polynomial Functions
Function Transformations
Function transformations involve altering the graph of a standard function through operations such as translation, scaling, reflection, and rotation. In the given problem, transformations help in graphing y = (1/2x) − 1 by scaling the graph of y = x by 1/2 and translating it downwards by 1 unit, without plotting individual points.
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Linear Functions
Linear functions are represented by equations of the form y = mx + b, where m is the slope and b is the y-intercept. They produce straight-line graphs. In the problem, y = (1/2)x − 1 is a linear function with a slope of 1/2, indicating a less steep incline compared to y = x, and a y-intercept of -1, shifting the graph downward.
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