Rate of change of line that passes through the given points is 1
Step-by-step explanation:
The ratio of vertical and horiontal changes is called the rate of change of a line. It is called slope which is denoted by m.
The formula for slope when (x1,y1) and (x2,y2) are the points on line is given by:

Given
(x1,y1) = (-6,-6)
(x2,y2) = (-2,-2)
Putting the values in the formula

Rate of change of line that passes through the given points is 1
Keywords: Slope, rate of change
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Answer: 2 hours and 27 minutes
Solution: We are given that the correlation coefficient between the age of a homeowner, x , and the number of years remaining on the homeowner's mortgage, y, is 0.485
We know that coefficient of determination is the percent of the variation in the dependent variable that is explained by the independent variable. The coefficient of determination is the square of correlation coefficient and is denoted by 
Therefore, we have:
denotes
Hence the option 23.5% is correct