The function y = 3.75 + 2.50(x - 3) can be used to determine the cost in dollars for a uber ride of x miles. What is the rate of
2 answers:
Answer:
Option D is correct
$2.50 per mile
Step-by-step explanation:
Slope intercept form:
The equation of line is given by:
y = mx+b .....[1]
where,
m is the slope of the line.
b is the y-intercept
As per the statement:
The function y = 3.75 + 2.50(x - 3)
where, y can be used to determine the cost in dollars for a uber ride of x miles.
Using distributive property:
we have;
⇒
On comparing with [1];
m = 2.50
⇒rate of change of the cost in dollars with respect to the number of miles = $2.50 per mile
therefore, $2.50 is the rate of change of the cost in dollars with respect to the number of miles
You might be interested in
The regression equation of Y on X is given by the following formula:
Where byx is given by the formula:
Where N is the number of values (N=8). We need to find the sum of X values, the sum of Y values, the average of X, the average of Y, the sum of X*Y and the sum of X^2.
The table of values is:
The values we need to know are on the following table:
By replacing the known values in the formula we obtain:
Now, the average of X and Y is the sum divided by N, then:
Replace these values in the formula and find the regression equation as follows:
The answer is a) y=4.6x+28.26
