need some math help pls(urgent)

djteotancolis · 19th May 2010, 12:56 AM

need some math help pls(urgent)

hey everyone i would be greatful to your'll if you could help me in math-geometry...this is slopes and lines

1:line through (-8,-2) and parallel to the line x = 5

2:Line through (-1,3) and parallel to the line 3x + 5y = 15

3:line through (8,0) and perpendicular to the line 3x + 4y = 12

pls give me the solution and the way of solving it
thanx

ddotpatel · 19th May 2010, 01:35 AM

1st one is easy,...

Let me remember the rest.

ddotpatel · 19th May 2010, 01:45 AM

Quote:

Originally Posted by djteotancolis

thanx for your help in math but i need to give a answer in number so what should i write?

OK,... So the line they gave you was x=5. This is because x IS ALWAYS 5.
So on the line that I've put, the value for y is changing,... but ,... x IS ALWAYS ????

So,......

djteotancolis · 19th May 2010, 01:50 AM

Quote:

Originally Posted by ddotpatel

OK,... So the line they gave you was x=5. This is because x IS ALWAYS 5.
So on the line that I've put, the value for y is changing,... but ,... x IS ALWAYS ????

So,......

thats what given in the textbook

djteotancolis · 19th May 2010, 01:51 AM

we need to find the solution and not the graph

Legend112 · 19th May 2010, 02:00 AM

Re: need some math help pls(urgent)

Edit: Y = a(x-x0)+y0 as far as I remember

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ddotpatel · 19th May 2010, 02:00 AM

Im LEADING you to the answer!!!!!!

Answer what I just asked you!!!!!

x IS ALWAYS ???????
x= .........
.
.
.
.
.
.
.
x = -8

djteotancolis · 19th May 2010, 02:01 AM

Quote:

Originally Posted by ddotpatel

Im LEADING you to the answer!!!!!!

Answer what I just asked you!!!!!

x IS ALWAYS ???????
x= .........
.
.
.
.
.
.
.
x = -8

oh ok thanx thats for the first one right?
sorry m just a bit tensed that i cant pay proper attention

ddotpatel · 19th May 2010, 02:01 AM

2:Line through (-1,3) and parallel to the line 3x + 5y = 15

When x=0
3(0) + 5y = 15
5y=15
Y=3
So when x=0,.. y=3 ,...(0,3)

When y=0
3x + 5(0) = 15
3x=15
X=5

So when y=0,.. x=5,.. (5,0)
Plot both on graph, then join the two.

djteotancolis · 19th May 2010, 02:04 AM

Quote:

Originally Posted by ddotpatel

2:Line through (-1,3) and parallel to the line 3x + 5y = 15

When x=0
3(0) + 5y = 15
5y=15
Y=3
So when x=0,.. y=3 ,...(0,3)

When y=0
3x + 5(0) = 15
3x=15
X=5

So when y=0,.. x=5,.. (5,0)
Plot both on graph, then join the two.

ok but what solution should i write to the question? we arnt doin drawing of graphs just the writing works