Determine the slope of the line passing through the given points.
(1, 2) and (2, -1)

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

Using graph paper, determine the line described by the given point and slope. click to show the correct graph below.(0, 0) and 2/3