Question 203309
1. How do we write the equation of a horizontal line?
If the line is horizontal all the points have the same y value.
Form: y = k
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What would be an example?
Ex: y = 8
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2. How do we write the equation of a vertical line? 
All the points will have the same x value.
Form: x = k
What would be an example?
Ex: x = 4
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3. The points (1, 3), (2, 5), (8, 17), (50, 101), and (1000, 2001) all lie on line M.
The points (1, -1), (2, -3), (8, -15), (50, -99), and (1000, -1999) all lie on line N.
a. Form the equations of both the lines. Show your work. 
b. What are the co-ordinates of the point of intersection of lines M and N?
c. Write the co-ordinates of the intersections of lines M and N with the x-axis.
d. Write the co-ordinates of the intersection of lines M and N with the y-axis. 
These four questions were answered yesterday.
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Cheers,
Stan H.