Answer:
Step-by-step explanation:
<u>According to data in the table we see pairs of points:</u>
<u>This gives us the rate of change:</u>
- (125 - 75)/(5 - 3) = 50/2 = 25
<u>The y - intercept is zero:</u>
- 75 = 3*25 + b
- 75 = 75 + b
- b = 0
<u>The line is:</u>
This is the line on the graph B
<u>Note.</u> <em>Its not clear what is needed regarding the table on the bottom</em>
Answer:
6 violists
Step-by-step explanation:
8:3 = 16:6
Digit, number, WHOLE NUMBER
Answer:
and
do not lie on the line
Step-by-step explanation:
Given

Required
Determine which points that are not on the line
First, we need to determine the slope (m) of the line:

Where


So;



Next, we determine the line equation using:

Where


becomes


To determine which point is on the line, we simply plug in the values of x to in the equation check.
For 
and 
Substitute 4 for x and 2 for y in 



<em>This point is on the graph</em>
<em></em>
For 
and
Substitute 4 for x and 3 for y in 



<em>This point is not on the graph</em>
<em></em>
For 
and 
Substitute 7 for x and 2 for y in 



<em></em>
<em>This point is not on the graph</em>
<em></em>
<em></em>
<em></em>
<em></em>
and<em> </em>
<em></em>
<em>Substitute </em>
<em> for x and </em>
<em> for y in </em>
<em></em>
<em></em>
<em></em>
<em></em>
<em></em>
<em></em>
<em></em>
<em></em>
<em></em>
<em></em>
<em>This point is on the graph</em>
From the table we can see:
Number of songs: Cost:
0 $ 0
1 $1.25
2 $2.50
3 $3.75
4 $5.00
Therefore the rate of change is: (2.50 - 1.25) / ( 2 - 1 ) = $1.25
Answer:
It means that : C. The cost increases $1.25 for each additional song that is downloaded.