Posted by kaitlyn on Thursday, October 31, 2013 at 11:38am.
1. Write the equation for the horizontal line that contains point G(8, 8).
2. What is an equation for the line that passes through points (1, 4) and (1, 4)? Write the equation in slopeintersect form.
3. Write an equation for the vertical line that contains point E(10, 3).

math (please help)  Jai, Thursday, October 31, 2013 at 12:07pm
#1.
Note that horizontal line has a zero slope, and in the form y = c, where c is a any real number.
Therefore, if it passes through the point (8,8), the equation must be y = 8.
#2.
If we are given the two points on the line, we first get the slope using the formula
m = (y2  y1)/(x2  x1)
where (x1,y1) and (x2,y2) are points on the line. Substituting,
m = (4  (4)) / (1  (1))
m = (4+4)/(1+1)
m = 4
Then we substitute it on the point slope formula:
y  y1 = m(x  x1)
Substituting,
y  4 = 4(x  1)
y = 4x  4 + 4
y = 4x
#3.
Note that vertical line has a slope equal to infinity, and in the form x = c, where c is a any real number.
Therefore, if it passes through the point (10,3), the equation must be x = 10.
Hope this helps :3

math (please help)  kaitlyn, Thursday, October 31, 2013 at 12:18pm
Thank You so much Jai
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