4a. State if the following are True or False The constant k in y = is called constant of proportionality. If k> 1, the graph of function f(kx) is horizontally stretched. A linear function model passes through every point of a data set. Hence the model will perfectly forecast unknown function values When the function is decreasing as the input value increases, the graph of the function is always concave up. If a > 0, then the parabola opens down.

4a. State if the following are True or False The constant k in y = is called constant of proportionality. If k> 1, the graph of function f(kx) is horizontally stretched. A linear function model passes through every point of a data set. Hence the model will perfectly forecast unknown function values When the function is decreasing as the input value increases, the graph of the function is always concave up. If a > 0, then the parabola opens down.

Algebra and Trigonometry (MindTap Course List)

4th Edition

ISBN:9781305071742

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter2: Functions

Section2.4: Average Rate Of Change Of A Function

Problem 4.2E: bThe average rate of change of the linear function f(x)=3x+5 between any two points is ________.

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