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Assignment 4
Draw the graphs of the following linear functions:
and determine the intersection point of the lines.
Solution
A line can be drawn if you have two points on that line. For the first line we can take 
and 
. These points can be found by taking subsequently 
and 
equal to 
. Similarly, for the second line we can take the points 
and 
.
In the intersection point both lines have equal -coordinates and thus we have to solve the following equation to solve the corresponding -value:
For this value of we still have to calculate the corresponding -coordinate. We do this by substituting the value of in the equation of 
. Then we get:
Thus the coordinates of the intersection point are:
This can be verified in the figure.
Return to Assignments Linear functions and graphs.
