5. Find the slope of the line passing through the given points. Then, tell whether the line rises, falls, is horizontal, or is vertical.
(a) (2,-4) and (4,-1)
(b) (8,9) and (-4, 3)
(c) (-3,-2) and (3,-2)
(d) (5,5) and (7,3)

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.  

4y - 6 + y^2 - 9 = y^2 + 4y - 15

y^2 term

terms

- terms

total of 3 terms when simplified

step-by-step explanation: