Liam calculated the slope of line ac between points a and b. olivia calculated the slope of line ac between points b and c. both liam and olivia drew triangles, as shown below, to calculate the slopes:

a graph shows numbers from 0 to 27 on the x axis at increments of 3 and the numbers 0 to 6 on the y axis at increments of 1. a line ac is drawn that joins the ordered pairs 0, 0 and 27, 6.the ordered pair 9, 2 is labeled as b. a right triangle is drawn with ab as hypotenuse and height 2 units. another right triangle is drawn with bc as the hypotenuse and height 4 units.

which statement is correct about the slopes calculated by liam and olivia if both calculated the slopes accurately?

liam calculated the slope as 2 over 9 and olivia calculated it as9 over 2.
liam calculated the slope as 9 over 2 and olivia calculated it as2 over 9.
both calculated the slope as 2 over 9.
both calculated the slope as 9 over 2.