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How do you find precent of change?
You don't.You could find percent of change but first you would have to learn to check your spelling!Suppose the value changes from X to Ythe change is (Y - X)the proportional change is (Y - X)/X = (Y/X - 1)the percentage change is 100*(Y/X - 1)that is,100*(New Value/Old Value - 1)
The change in the y-value per change in the x-value is a ratio often referred to as the?
slope
What does x - y?
In expressions such as "x-y", both "x" and "y" can have any value. The value of "x-y" will depend on what the value of "x" and the value of "y" are.
How do you do percentage increase in math?
There are two ways. Suppose you want to increase a number X by Y%:The simple way (with limited applications).Calculate Y% of X = X*Y/100Add this X.The less simple way but one with applications for the next steps in percentage changes (compound changes and, if given the value AFTER a percentage increase, finding the original value:Calculate the multiplier, M = 1 + Y/100Multiply X by M.The advantage of using M are:If you need to calculate the value of X if it increases by Y% every year for n years, the answer isX*M^nIf you know that AFTER an increase of Y% the value was X, then the original value was X/M.Of course, if it is a Y% decrease, then M = 1 - Y/100.
What is the slope of the line y equals 4 over 7?
If y=4/7, then the line is a horizontal line. This means that there is infinite change in the x value without any change in the y value, so slope (change in y/ change in x) will be 0 divided by any number. Thus the slope is 0.
