Explain how to write the equation of a line if you know its y-intercept and the equation of a line to which it is parallel.

Question

anonymous · Answer

@adrynicoleb

adrynicoleb · Answer

Sorry, I'm super bad at math >.< Zepdrix can help you though :P

anonymous · Answer

It is real easy.. :)

anonymous · Answer

Are you giving me any example to explain or I myself should have that opportunity??

anonymous · Answer

@zepdrix

zepdrix · Answer

whut? :U

anonymous · Answer

heeeelp :(

zepdrix · Answer

To write the equation of a line, we need two things:$$\Large\rm y=\color{orangered}{m}x+\color{royalblue}{b}$$
The slope $\Large\rm \color{orangered}{m}$
and the y-intercept $\Large\rm \color{royalblue}{b}$

zepdrix · Answer

If we already know the y-intercept, then we only need to find one thing,$$\Large\rm y=\color{orangered}{m}x+b$$
The slope $\Large\rm \color{orangered}{m}$

zepdrix · Answer

slope is the rate at which a line is increasing over time.
It tells us how steep the line is.

If two lines are parallel, they have the same slope value.
Same steepness.

zepdrix · Answer

So if you have another line which is parallel to this one,
they will have the same slope! :O
You would get your $\Large\rm \color{orangered}{m}$ value from the parallel line.

zepdrix · Answer

They want you to explain? That's no fun.
Can you use some of that info to uhhhhhhhh... figure it out? :d

zepdrix · Answer

Maybe come up with an example or something?

mokeira · Answer

the slope of parallel lines is=0 when you equate them together.
you can find the x intercept if you have the y intercept so that you can have two points on the line you are trying to make an equation for
so you have the slope, two points, introduce a point (x,y) and you can now find the equation.