Write an equation of the line described
Favorites|Homepage
Subscriptions | sitemap
HOME > > Write an equation of the line described

Write an equation of the line described

[From: ] [author: ] [Date: 12-03-07] [Hit: ]
as everyone needs help sometimes, especially with mathematics as most people nowadays dont get it, I mean I only have like 5 students in my calculus class, but Im the only one who can understand whats going most of the time.......
though (6,9), perpendicular to x=5

-
the line x=5 is a vertical line going through the point (5,0)

to be perpendicular means to go through at a 90 degree angle, so our other line must be horizontal.

all horizontal lines are in the form y= a number

since our equation has to pass through (6,9), and the y value for this point is 9, then our equation is

y=9

-
If it is perpendicular to x=5, which is a horizontal line, then the gradient of the line passing through (6,9), which will then be vertical, must be 0, as any 2 points on this vertical line will have exactly the same y co-ordinate, and using the formula m=(y - y(1))/(x - x(1)), for where y=y(1), then
m=0/(x - x(1))=0, and so to find the equation going through the point (6,9), rearrange the above formula of the gradient to get y - y(1)=m(x - x(1)), replace the m with 0, the x(1) with 6, and the y(1) with 9, and so you get
y - 9=0(x - 6)=0
y=9

And to the guy who answered that you should do your own homework is wrong, as everyone needs help sometimes, especially with mathematics as most people nowadays don't get it, I mean I only have like 5 students in my calculus class, but I'm the only one who can understand what's going most of the time.

-
Y=9
1
keywords: equation,an,the,Write,line,described,of,Write an equation of the line described
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .