Answer:
The slope is 0 because it is a straight line
Step-by-step explanation:
Answer:
1. Linear; 2. C = 2.50x + 40
Step-by-step explanation:
1. Prediction
Yes, it is a linear function, because each additional photo adds the same amount to the cost.
2. Equation
Let C = the cost of the photo package
and x = the number of photos
Then 2.50x = the cost of the photos
And $40 = cost of photo shoot
Then C = 2.50x + 40
The figure below shows that the graph of your equation is a straight line.
Solution to equation
for all real values of x is
.
<u>Step-by-step explanation:</u>
Here we have ,
. Let's solve :
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⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
By quadratic formula :
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⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
But at
we have equation undefined as
. Hence only solution is :
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Since , 
⇒ 
Now , General Solution is given by :
⇒ 
Therefore , Solution to equation
for all real values of x is
.
The measure of a straight line is 180
125+30=155
180-155=25
x = 25