Marisol attempted to determine the slope of a line based on the two points shown in the table below.

x
y
–1
4
3
10

Step 1: (–1, 4) and (3, 10)

Step 2: StartFraction 10 minus 3 Over 4 minus (negative 1) EndFraction

Step 3: StartFraction 7 Over 5 EndFraction

Which statement best explains Marisol’s error?
a. Marisol computed StartFraction y 2 minus y 1 Over x 1 minus x 2 EndFraction.
b. Marisol computed StartFraction x 2 minus x 1 Over y 2 minus y 1 EndFraction.
c. Marisol computed StartFraction y 2 minus x 2 Over y 1 minus x 1 EndFraction.
d. Marisol computed StartFraction x 2 minus y 2 Over x 1 minus y 1 EndFraction.
Mark this and return