a) you data is (0,1) but you made the calculation with (0,-1)
b) your calculation of the second slope is not correct
Question:
Using slopes, determine if the points lie on a straight line.
a) , &
b) , &
Attempt:
a) &
&
It is a straight line as the slopes are the same.
b) &
&
It is not a straight line as the slopes don't match.
are my answers correct?