the equation of line passing through given point parallel to y = -2x+7 is: 
Step-by-step explanation:
Given equation of line is:

As the given line is in slope intercept form, the coefficient of x is the slope
Let m1 be the slope of given line

Let m2 be the slope of second line then

The equation of line is given by:

Putting the value of slope

Putting the point (4,1) in the equation

Putting the value of b in the equation

Hence,
the equation of line passing through given point parallel to y = -2x+7 is: 
Keywords: Slope, intercepts
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Answer:
-9 may be the right answer
Answer:
a) response variable
Step-by-step explanation:
The response variable is the variable that depends on other variables such as the independent or explanatory variable, it is the variable that is being tested. The response variable is also called the dependent variable.
In linear regression, the y variable is referred to as the response variable while the x variable is referred to as the explanatory or independent variable.
In this case the y variable is "the number of times they cough in a day" and this variation depends on the x variable "number of cigarettes a person smokes in a day".
Unit rate is used to compare quantities in which the second quantity is one. Common examples of unit rate would include, miles per hour earnings per hour cost per gallon.