The unit rate is the rate of change per day or the slope.
To get the slope of the line, we use the slope formula:
Where is point 1 on the line and tex](x_{2},y_{2})[/tex] is point 2 on the line.
Let's take 2 points from the line and calculate the slope. We will take the points (0,0) and (1,3) (any two points on the line will give the correct answer).
<u>This means Barton reads 3 chapters per day. Answer choice C is right.</u>
ANSWER: C
Answer: y = 3.5 x+ 43.8
Step-by-step explanation:
Here x represents the number of years after 1990
Thus, we get the table that is used to find the equation will be,
x 0 2 4 6 8
y 45 51 57 61 75
Let the equation that shows the above data,
y = b + a x ---------(1)
By the above table,
By substituting these values in the above value of a and b,
We get b = 43.8 and a = 3.5
Substitute this value in equation (1)
we get, the equation that shows the given data is,
y = 3.5 x + 43.8
⇒ Option (3) is correct.