how about just treating it like 2 ordered pairs
(1991, 4.25) and (1997, 5.15) ?
rate of change = (5.15-4.25)/(1997-1991)
= .15
(1991, 4.25) and (1997, 5.15) ?
rate of change = (5.15-4.25)/(1997-1991)
= .15
Change in range = $5.15 - $4.25 = $0.90
Change in domain = 1997 - 1991 = 6
Now, divide the change in range by the change in domain to find the rate of change (slope):
Rate of change = Change in range / Change in domain
Rate of change = $0.90 / 6
To simplify, divide the numerator and denominator by 0.90:
Rate of change = $0.90 / 6
Rate of change = $0.15
Therefore, the rate of change (slope) for the federal minimum wage between 1991 and 1997 is $0.15 per year.
slope = (change in y) / (change in x)
Here, the "change in y" represents the change in the federal minimum wage ($5.15 - $4.25) and the "change in x" represents the change in the years between 1991 and 1997 (1997 - 1991).
Let's calculate it step by step:
Change in y = $5.15 - $4.25 = $0.90
Change in x = 1997 - 1991 = 6
Now we can substitute the values into the slope formula:
slope = (change in y) / (change in x)
slope = $0.90 / 6
slope = $0.15
Therefore, the rate of change (slope) for the federal minimum wage between 1991 and 1997 is $0.15.