(−4, −2), (2, 1), (6, 3), (14,7)
A. (6, 8), (4, 0), (18, 24), (20, 26)
A line represents a proportional relationship. Which set of points could be on the line?
Responses
A (6, 8), (4, 0), (18, 24), (20, 26)(6, 8), (4, 0), (18, 24), (20, 26)
B (1, 1), (2, 1), (3, 3), (4, 2)(1, 1), (2, 1), (3, 3), (4, 2)
C (3, 6), (4, 8), (9, 4), (11, 2)(3, 6), (4, 8), (9, 4), (11, 2)
D (−4, −2), (2, 1), (6, 3), (14,7)
2 answers
Not going to go through all that mess, it looks like for A, B, and C
your repeat the whole set of points.
Here is what you do:
For any given set, pick any 2 and find the equation of the line
then check to see if the two points you did not use, satisfy this equation.
or..... , this might be the fastest way
find the slope using the 1st and the 2nd, then the 2nd and the 3rd, then
the 3rd and the 4th. If the slope is the same, all 4 points lie on the same
line. This works because you are using a "linking point" for each calculation
that is, the 2nd point is used in both the first calculation and the second
calculation.
A quick mental check for the bot's answer of A
will show that it got it wrong again.
your repeat the whole set of points.
Here is what you do:
For any given set, pick any 2 and find the equation of the line
then check to see if the two points you did not use, satisfy this equation.
or..... , this might be the fastest way
find the slope using the 1st and the 2nd, then the 2nd and the 3rd, then
the 3rd and the 4th. If the slope is the same, all 4 points lie on the same
line. This works because you are using a "linking point" for each calculation
that is, the 2nd point is used in both the first calculation and the second
calculation.
A quick mental check for the bot's answer of A
will show that it got it wrong again.
1 answer