Vocabulary
The difference between an actual y-value and a predicted y-value.
What is residual
Words such as depreciate, downward trend, reduce by a percent, etc., all refer to this type of function.
What is exponential decay.
y= 88 (0.9)t
y= 6(2)t
y= 21(1.01)t
Which of the above represent exponential decay?
What is y=88(0.9)t
The b value of an exponential function represents this.
What is the rate of growth or decay.
The type of function where the values change by equal differences over equal intervals.
What is a linear function
What is linear.
Exponential growth has what a b value above this number.
What is 1
The a value of an exponential function represents this.
What is the initial value.
The type of function where the values change by equal factors over equal intervals.
What is an exponential function
How do exponential functions change over equal intervals?
What is by equal factors (or percentage change)
What is between 0 and 1.
The initial value of the exponential growth or decay function can be found on the graph as this key feature.
What is the y-intercept.
The statistical method used to fit an exponential function to a set of bivariate data.
What is exponential regression
How do linear functions change over equal intervals?
What is by equal differences
If Janet puts money into an account with a 5% interest rate, she can expect to see what kind of exponential change?
What is exponential growth.
This is the calculation for the b value in an exponential growth function.
What is 1 plus the decimal conversion of the rate of change.
A function defined by multiple sub-functions.
What is a piecewise function
The function modeled by y=5,665(0.35)x represents what initial amount and what kind and percent rate of change?
What is the initial amount of $5,665 and the decay rate of 65%.
John bought a car for $35,000 last year. Each year, the car depreciates by 7%. What is the formula to represent its current value? How much is it worth?
What is y=35,000(.93)1 for a value of $32,550
This is the calculation for the b value in an exponential decay function.
What is 1 minus the decimal conversion of the rate of change.