Question

FIRST TO ANSWER WILL MEDAL
Which of the sets of points lies on the line graphed here?


A)
{(0, 0), (1, 1), and (2, 2)}


B)
{(1, 1), (1, 2), and (2, 3)}


C)
{(0, 0), (-1, 1), and (1, 2)}


D)
{(0, 0), (-1, 1), and (1, -1)}

Answer 1

D.

Answer 2

OK CAN YOU PLZ EXPLAIN?:)

Answer 3

Yes!

Answer 4

It first off goes through points (0,0) Thats easy to see.

Answer 5

Then point (-1,1) Go over left 1 on the x-axis, and then up 1 in the direction of the y-axis, this falls onto your line.

Answer 6

Now your line has a negative slope, so the third point couldn't be (x,y), rather than (x,-y)

Answer 7

OHHH OK THATS EXACTLY THE WAY MY TEACHER TAUGHT ME THX!

Answer 8

(1,-1) satisfies this.

Answer 9

You're very welcome. :-)