Question

which points are collinear 3,1 , 5,5 and 7,9,

Answer 1

don forget to show work

Answer 2

5:5 cause they are on the line y=5

Answer 3

how do you show the work though?????

Answer 4

Hmm....I don't really know how to explain in any other way..sorry

Answer 5

Jackie do the same thing as before..:
Find the line that connects that (3,1) and (5,5).

Answer 6

the equation is:
y-y1 = M(x-x1)
5-1 = M(5-3)
4 = M * 2, M = 2

Answer 7

well its cuz idk how to do that sorry -_-

Answer 8

so now:
y - y1 = 2 ( x - x1 )
y - 1 = 2( x - 3 )
y - 1 = 2x - 6
y = 2x - 5

Answer 9

Now try the last point and see if it's on the line:
(7,9)
when x = 7
y = 2 * 7 - 5 = 14 - 5 = 9
so as you see: x = 7, y = 9
yea that's the same as our point: (7,9)

Answer 10

so all 3 points are on the same line

Answer 11

so there all collinear

Answer 12

yea

Answer 13

ok thank you