
Concept explainers
(a)
To plot: The points
(a)

Explanation of Solution
Given information: The two points for a line
Graph:
Plot the points
Figure (1)
Interpretation: From the above graph it can be seen that the point A is 2 units downward from x -axis and point B is 1 unit upward from x -axis.
(b)
To find: The slope of line
(b)

Answer to Problem 5E
The slope of line
Explanation of Solution
Given information: The two points for a line
Formula used: The formula for the slope of line determined by points
Calculation:
Substitute
Therefore, the slope of line
(c)
To graph: The line
(c)

Explanation of Solution
Given information: The two points for a line
Graph:
The equation of line with slope
As calculated in part (b), the slope of the line
Substitute
So, the equation of the line
Draw the graph of the line
Figure (2)
Interpretation: From the above graph it can be interpreted that the y -intercept of the equation is
Chapter 1 Solutions
Calculus: Graphical, Numerical, Algebraic
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