It is (the value of x after some mathematical operation) minus (the value of x before the operation).
If a variable goes from X to Y, change = Y-X.The absolute change = Y-X or X-Y, whichever is positive.The percentage change = 100*Change/X = 100*(Y-X)/X or 100*(Y/X - 1)
Delta represents a change. Therefore, "delta x" means "change in x."
yes, change in y over change in x equals slope
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 y over the change in x equals the slope(m) in the equation y=mx+b
slope is change in y over change in x
the change in y over the change in x equals the slope(m) in the equation y=mx+b
---x--x--
In general, the percent change from x to y = 100 [(y - x)/x]. In this instance 100 X(13/13) = 100 %.
7. If you allow for change, an infinite number of ways; eg 1 x 10p with 1 x 2p change or 1 x 10p with 2 x 1p change, etc.
Rate of Change = Change in value/Change in time to make this more clear, look at the line graph and pick two points of x. for example, we will use x=3 and x=1 in the equation f(x)=(x-3)^2 the average rate of change = change in y/change in x which equals function(b)-function(a)/b-a with that, we get: f(3)-f(1)/3-1. this creates (3-3)^2-(1-3)^2/3-1 this simplies to 0-4/2 which equals -2 so the rate of change in f(x)=(x-3)^2 is -2.
x is elastic to y: when y changes, x tends to change a lot with it. x is inelastic to y: when y changes, x does not change much with it.