I don't get division at all i did but i moved a lot of places and i forget things

How to determine whether two known pairs of points are on the same line.

5× 1/2 = ? a) more than 5 because you are multiplying by a whole number b) 5/10 because you multiply the numerator and denominator by 5 c) less than 5 because you are multiplying by a number that is more than 1 d) less than 5 because you are multiplying by a number that is less than 1

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.