00:01
So in this one, we're given this table of data, these xes and y's, which are outputs from a function.
00:07
We're asked if this function is linear or not.
00:09
To figure out if it's linear or not, we have to calculate the slope at each point.
00:15
Remember, the slope is the change in y over the change in x, keeping them coordinated with each other.
00:22
So, minus 26, minus a negative 4 over, if i do these two, minus 2, minus a minus 1.
00:31
Have to keep them coordinated.
00:33
Whatever output i use first is the first input on the denominator.
00:38
All right.
00:39
So this is minus 26 plus 4...