Josie found the slope of the line shown above. She used the points (1, -6) and (5, 2) and wrote: 8
2 - (- 6)
1-5
2 to find the slope. Which of the following describes her error?
4
She mixed up and in the denominator.
She did not combine the negative signs correctly.
She subtracted instead of adding.
She used an x-value in the numerator of the fraction.