Which ordered pairs could be points on a line parallel to the line that contains (3,4) and (-2,2)

What are the relative frequencies to the nearest hundredth of the columns of the two-way table?

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor