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ss7ja [257]
3 years ago
13

describe what would be true about the rate of change in a situation that could be represented by a graphed line and an equation

in the form y=mx + b
Mathematics
1 answer:
Andru [333]3 years ago
5 0
If y=mx+b,

\frac { dy }{ dx } =m

You can't differentiate a constant, so dy/dx=m.
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An electrician charges a set fee of $100 for every house call and then charges an additional hourly rate. One day, the electrici
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Answer:

C=75t+100

Step-by-step explanation:

Let

C(t) ---->the total cost of the electrician's services in dollars

t ---> the number of hours

we know that

The linear function in slope intercept form is equal to

C=mt+b

where

m is the slope or unit rate

b is the y-intercept or initial value

In this problem we have

the y-intercept is equal to

b=\$100 ----> set fee

we have the ordered pair (2,250)

substitute the given values

250=m(2)+100

Solve for m

2m=250-100

2m=150

m=\$75\ per\ hour

The linear function is equal to

C=75t+100

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