Answer: OPTION D.
Step-by-step explanation:
The formula that is used to calculate the slope of a line is:
Where and
are two points on the line.
In this case the student finds the slope of the line that passes trough these points:
You can notice that she writes in the numerator that:
So she chose the point as
and the point
as
.
Then and
in the denominator must be:
Therefore, she did not keep the order of the points the same in the numerator and the denominator.
Answer:
Step-by-step explanation:
By using regression line calculator,
Equation of the line of best fit,
c). y = 0.74x + 0.03
Here, x = Number of pints
y = Weight in pounds
d). We have to find the weight of 10 pints of the blueberries,
By substituting x = 10 in the equation,
y = 0.74(10) + 0.03
y = 7.4 + 0.03
y = 7.43 pounds
e). If per pound cost of the blueberries = $2.25
By substituting y = 2.25 in the equation,
2.25 = 0.74x + 0.03
x =
x = $3.00 per pound
Therefore, cost of 10 pounds blueberries = 3 × 10
= $30