View Full Version : Homework help!!
sammy101
10-17-2004, 06:17 PM
Again,i need help with Algebra:rolleyes: ok heres the question
it says to
Write the equations for the horizontal & vertical lines that pass through the given point
i dont understand at all!!:eek:
heres # 13
(7,2)
HELP!!again
ILoveMyAbbyGirl
10-17-2004, 06:21 PM
If you want a horizontal line, the Y-intercept will ALWAYS be the same. Graph it to see.
So, for a horizontal like, y must always be the same. So lets make y=4. You would plot (0,4) because that is the y-intercept. That would be your equation-- y=4.
Same for x. X will be a vertical line, because the x-intercept will always be the same. So make x=-2 for example. Make a vertical line, and you will notice that if x=-2, x will ALWAYS be -2 for that line. Your equation would be x=-2.
Remember, a vertical line has a slope of 1/0, and you cannot divide by zero, so a vertical line is undefined.
Hope I helped!
ILoveMyAbbyGirl
10-17-2004, 06:22 PM
Ahh wait... I forgot to include the problem... a vertical point from (7,2) would be at 7 (x=7) and the horizontal line would be y=2, so the line would be horizontal at two, and they would meet at the point (7,2)
sammy101
10-17-2004, 06:24 PM
oh i see! Thats easy,lol im not very good with Algebra:rolleyes:
sammy101
10-17-2004, 07:51 PM
ok i need help again! i get so confused...
:confused:
ok..so how you'd you find y in this problem??? i know how to find X
y=2x+1
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