is this english? need help!!

[8dltndus]

Hi. I'm in 7th grade and I have a question in my workbook that I totally DON'T understand.

so this is the question:
Find and equation of the line parallel to the given line that contains the given y-intercept.Then find an equation of the line perpendicular to the given line that contains the given y-intercept..

ok.whoa.is that english? :-|
there's nine problems but this is one of the problems.
y=5x;(0,-1)
ok. my brain is fried.. please help

 

[mmm4444bot]

Yes, the exercise makes sense to me, but my brain is only partially fried.

You need to find the equations for two perpendicular lines intersecting each other at a common y-intercept: (0,-1).

One of these two lines must be parallel to the given line: y=5x.

Use what you've learned about writing equations for lines when you know their slope and the coordinates of one point.

Did you learn the slope-relationships between parallel lines and between perpendicular lines?

Lines that are parallel both slant the same, so their slopes are equal.

Lines that are perpendicular have slopes that are negative reciprocals of each other (i.e., their product is -1).

Does this sound familiar? :cool:

We can find examples on the internet of this type of exercise, using Google. Otherwise, if you get stuck, please tell us where, and we can explain.

 

[8dltndus]

hmmm....

Yes, the exercise makes sense to me, but my brain is only partially fried.

You need to find the equations for two perpendicular lines intersecting each other at a common y-intercept: (0,-1).

One of these two lines must be parallel to the given line: y=5x.

Use what you've learned about writing equations for lines when you know their slope and the coordinates of one point.

Did you learn the slope-relationships between parallel lines and between perpendicular lines?

Lines that are parallel both slant the same, so their slopes are equal.

Lines that are perpendicular have slopes that are negative reciprocals of each other (i.e., their product is -1).

Does this sound familiar? :cool:

We can find examples on the internet of this type of exercise, using Google. Otherwise, if you get stuck, please tell us where, and we can explain.

thanks for trying to help me out,but i'm still kind of confused.
what is a slope-relationship of parallel and a perpendicular line?and how do you find an equation for that?

 

[mmm4444bot]

I don't really know what they teach in the 7th grade nowadays.

You need to be familiar with linear equations and their graphs, to understand this exercise.

Can you answer these:

What is the slope of the line y = 5x ?

Do you know what a line's y-intercept is?

Are you familiar with the model y = mx + b ?

 

[pka]

what is a slope-relationship of parallel and a perpendicular line? and how do you find an equation for that?

The answer to that question is;
Two lines are parallel if they have the same slope.

Two lines are perpendicular if the product of their slopes is \(\displaystyle -1~.\)

 

[8dltndus]

it's not my homework.
I bought this one workbook so i can work on it.
and there are no explanation on how to do it. :/
and also I didn't learn this in school yet.