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stretch factor
[stretch factor|stretch factor] is a scalar value that determines the vertical scaling of a function.
Definition
stretch factor is a scalar value that determines the vertical scaling of a function. A negative value reflects the function about the x-axis.
Mechanism
stretch factor Using the y-intercept (0, -2) as a clear point on the graph, the stretch factor can be determined. Rewriting into standard form reveals the stretch factor matches the coefficient 'a' in the original quadratic.
Effects
The stretch factor stretch factor can be determined using a known point on the graph, other than the x-intercepts. This factor influences the vertical scaling of the polynomial's graph.