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Assignment 8
The line 
goes through the points 
and 
and intersects the line:
in the point 
.
Calculate the coordinates of .
Solution
We can use the formula that computes the slope of the line from the points 
and 
, but this is not necessary. We notice that the 
-coordinates of both points are equal, meaning that the line is parallel to the 
-axis and thus has the equation 
. The 
-coordinate of the intersection point is:
and thus has the coordinates 
, see the figure.
Return to Assignments Linear functions and graphs.
