maiemaie Posts: 2, Reputation: 1 New Member #1 Nov 1, 2007, 08:07 PM
how to solve these equations
* -5x+4=29

* 6(2a-3) =-30

* lx+3l =4

* is it a paralle, perpendicular, or neither?
Line1: through (2,10) and (1,5)
Line2: through (3,-7) and (8,-8)

* x<-3

* y<-x+4
 shorty777 Posts: 19, Reputation: 2 New Member #2 Nov 1, 2007, 08:18 PM
x=5

a=-4

x=1

paralle

x=-4

y=10 x= -3

I don't know for sure I'm just gesing if it helps at all
 Gernald Posts: 901, Reputation: 93 Expert #3 Nov 1, 2007, 08:20 PM
the first two you need to get x on one side and that'll be your answer.
#3 I think has 2 answers because 3 can be put to the otherside as -3 or +3
#4 you can graph using a normal x y coordinate plane and that'll give you the answer.
What are you looking for on the last two? X?

Good Luck
 rankrank55 Posts: 1,259, Reputation: 177 Ultra Member #4 Nov 1, 2007, 08:22 PM
For the equations, solve for the unknown. In order to tell whether the two lines are parallel, perpendicular, or neither you must plot them on a graph and see what type of line relationship they have.

I will help you with the first *... -5x+4=29... remember... you must use order of operations
-5x+4=29

-5x=29-4
_______
-5x=25 (now you must get the x by itself)
_______
x=25/-5 (dividing 25 by -5)
_______
x=-5

Hope this helps you understand these a little bit more!
 rankrank55 Posts: 1,259, Reputation: 177 Ultra Member #5 Nov 1, 2007, 08:26 PM
Originally Posted by shorty777
x=5

a=-4

x=1

paralle

x=-4

y=10 x= -3

i don't know for sure i'm just gesing if it helps at all
That was meant to be a disagree... some of these are INCORRECT!!
 shorty777 Posts: 19, Reputation: 2 New Member #6 Nov 1, 2007, 08:44 PM
That is why I said that I don't know for sure
 rankrank55 Posts: 1,259, Reputation: 177 Ultra Member #7 Nov 1, 2007, 08:47 PM
Yes, but it's best to not post if you do not know for sure... especially with problems that have a definite right and wrong answer...
 shorty777 Posts: 19, Reputation: 2 New Member #8 Nov 1, 2007, 08:49 PM
Okay what ever
 rankrank55 Posts: 1,259, Reputation: 177 Ultra Member #9 Nov 1, 2007, 08:50 PM

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