View Full Version : uh oh I need math help (coordinate geometry)
K just a few questions that I can't figure out:
1) write and equation of a line whose x-intercept is the negative of the y-intercept.
2)For the points D(2,3), E(6,-1) and F(2,-1), determine the equation of a line through F and a)parallel to DE b)perpendicular to DE
3)An Equation of the line is y=mx-2. Find the value of 'm' if the line passes through a)(-3,1) b) (5,-2) ('m-'=slope)
4)Two perpendicular lines intersect on the x-axis. An equation of one line is y=(-3x-6) Find and equation for the other line.
Please help me out with these :(
hi mate http://www.tombraiderforums.com/images/smilies/wave.gif well i might be wrong since i dont know the english maths terms that well, but ill try to help You out:
1) this ones easy (if i got the question right):
f(x)=-x (or y=-x)
3m=-3 |: 3
id help You with the others, but i dont know some of the terms http://www.tombraiderforums.com/images/smilies/tongue.gif http://www.tombraiderforums.com/images/smilies/smile.gif
2. a) y = -x + 1
b) y = x - 3
Thank you TR-PLayer!
You're welcome! http://www.tombraiderforums.com/images/smilies/wave.gif
4. y = 3x + 6
hi TR-P http://www.tombraiderforums.com/images/smilies/wave.gif http://www.tombraiderforums.com/images/smilies/smile.gif
np Rogue ;)
Hi TopCat! http://www.tombraiderforums.com/images/smilies/wave.gif
Hi Everyone! http://www.tombraiderforums.com/images/smilies/grouphug.gif
BTW TC I accidently put a sad face on my PM to you http://www.tombraiderforums.com/images/smilies/tongue.gif
TR-Player: Thanks again. We'll see if you got those right after my math class today lol
Originally posted by rogue_eclipse:
BTW TC I accidently put a sad face on my PM to you http://www.tombraiderforums.com/images/smilies/tongue.gif hehe i noticed that ;)
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