Give another name for the horizontal scale change of magnitude -1
wouldn't it make a mirror image (reflection of the graph?
thank you, i have reflection to the y-axis graph
bob is correct
reflection over the y-axis
The horizontal scale change of magnitude -1 is commonly known as a compression. Another name for this type of scale change is a contraction.
To understand why this is the case, let's discuss how horizontal scale changes work. In mathematical terms, a horizontal scale change involves stretching or compressing a function horizontally. This can be achieved by multiplying or dividing the x-values of the function.
When the magnitude of the scale change is less than 1 (such as -1 in this case), it indicates a compression of the function. This means that every x-value of the function is multiplied by a fraction less than 1, effectively making the function narrower horizontally.
The reason why this can also be called a contraction is because the function is being condensed or brought closer together on the x-axis. So, instead of the original width, the function now occupies a narrower region of the graph.
In summary, when encountering a horizontal scale change of magnitude -1 or any value less than 1, it is correct to refer to it as a compression or contraction of the function.