Answer:
Step-by-step explanation:
<em>1).</em>
(a). Yes, the graph is linear.
(b). Rate of change is a slope m, m = (60 - 80) / (10 - 0) = - 2
<em>2).</em> Graph is not proportional, because y-intercept is (0, 80) and not (0, 0)
NO, any graph can be shifted horizontally and/or vertically
Answer: I think it might be 3in
Step-by-step explanation: hope it helps
The Slope-Intercept form of the equation of the line is:

Where "m" is the slope of the line and "b" is the y-intercept.
The slope can be found with:

Choose two points from the table. These could be the points (1,-4) and (4,-19). You can set up that:

Substituting values, you get that the slope of this line is:

You can substitute the slope and the first point into the equation in Slope-Intercept form:

Solve for "b":

Therefore, the Equation of this line in Slope-Intercept form is: