exam Maths Puzzle Numerical Ability

How do you determine if this relation is a function.

(4,5),(3,-2),(-2,5),(4,7)

Read Solution (Total 0)

exam Other Question

Find the slope of the line passing through the points (-1, -4) and (-3, 10). How would you factor out the greatest common factor for this problem?

13y^8+26y^4-39y^2

Help would be much appreciated.