Question

What is the equation of this line?

Answer 1

What line?

Answer 2

http://smartboards.typepad.com/smartboard/files/coordinates1.swf

Answer 3

No I can't

Answer 4

Sorry I can't load your attachment

Answer 5

Give a minute please

Answer 6

take your 2 points and find the slope by using the slope formula
slope(m) = (y2 - y1) / (x2 - x1)
(4,5)....x1 = 4 and y1 = 5
(-2,-3)...x2 = -2 and y2 = -3
now we sub
slope(m) = (-3 - 5) / (-2 - 4)
slope(m) = -8/-6
slope(m) = 4/3

now we use y = mx + b form
slope(m) = 4/3
use either of your points...I will use (4,5)...x = 4 and y = 5
and since we know the slope(m) and the points (x,y)...we need to find the y int (b)
now we sub
y = mx + b
5 = 4/3(4) + b
5 = 16/3 + b
5 - 16/3 = b
15/3 - 16/3 = b
-1/3 = b

so your equation for this line is : y = 4/3x - 1/3
unless you need it in standard form.....do you ??

Answer 7

No i dont,Thank you so much

Answer 8

anytime :)

Answer 9

Scrap that,i'm making a different question