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Exercise from textbook:

Sketch the curves of the given function:

y = sqr x; x equal to or greater than 0

y = sqr 2x - 5, x equal to or greater than 5/2

For example when y = 3; x = 7

But I have been unable to 'undo' the equation- what if have y = 3 how does one determine x = 7 ?

Thank you

Solution Summary

This provides an explanation of finding a y value given an x value.