Math/Algebra do u know how to do slope intercept?
posted by Chico on .
The following problems are in slope,point slope, and slope intercept forms of a line.
Could you check these thanks.
Find the slope intercept form of a line that passes through these two points (4,4) and (2,1)
Answer: y= 1/2x2
Find the slope intercept form of a line that is parallel to the line created in problem #1 and passes through the point ( 2,6)
Answer: y= 1/2x+4
Find the slope intercept form of a line that is perpendicular to the line created in problem #1 and passes through the point (1,3). What can you say about the relationship of this line and the line created in problem #2.
Answer: y= 1/2x+1/1/2
My response: I can say that is I used the same slope which is 1/2x

two points (4,4) and (2,1)
m = slope = (Y1Y1)/(X2X1)
= (14)/(2+4) = 3/6 = 1/2
then put either point in:
y = (1/2) x + b
1 = (1/2) 2 + b
1 = 1 + b
b = 2
so
y = (1/2) x + 2
I think you have a sign error in your answer for b
if parallel, same slope = (1/2)
y = (1/2) x + b
now the point in
6 = (1/2)(2) + b
6 = 1 + b
b = 5
so
y = (1/2) x + 5
then perpendicular
m = 1/(1/2) = 2
s
y = 2 x + b
3 = 2(1) + b
b = 1
so
y = 2 x + 1 
By the way, you can always check the answers by seeing if all the points fit the line you come up with.

Thank you very much you really Helped!

I had the same homework to not like this but now I know how to do it thanks chico for posting a similar problem and thanks damon

yo sup peops 2x  is y
 
by  the two numbers and it gives you x or y or w

WHAT THE HECK IS ALLL THIS MESSS

HOW WILL U DO THE MESS I DON'T UNDERSTNAD IT!!!!!!!!! IGUESS