A price of readjust is a rate that defines how one quantity changes in relationship to one more quantity. If x is the live independence variable and also y is the dependent variable, then

price of adjust = adjust in y adjust in x

prices of readjust can be hopeful or negative. This corresponds to rise or diminish in the y -value between the two data points. When a amount does not readjust over time, it is referred to as zero price of change.

### optimistic rate of adjust

once the value of x increases, the worth of y increases and the graph slants upward.

### an unfavorable rate of readjust

as soon as the worth of x increases, the value of y decreases and also the graph slants downward.

### Zero rate of readjust

as soon as the value of x increases, the value of y continues to be constant. The is, there is no adjust in y value and also the graph is a horizontal line .

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** Example: **

use the table to discover the rate of change. Climate graph it.

Time control ( h ) x street travelled ( mi ) y 2 80 4 160 6 240

A rate of readjust is a rate that describes how one quantity transforms in relation to one more quantity.

price that change = change in y change in x = change in street change in time = 160 − 80 4 − 2 = 80 2 = 40 1

The price of change is 40 1 or 40 .

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This way a car is traveling at a rate of 40 miles every hour.