Determine the points are collinear (1,2) (2,3) and (-2,-11)

Which function is represented by the graph

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

What is the probability of throwing several dice with sum equal to 6 (six)? show the ways of possibilities for sum 6 (as the numerator) and the ways of throwing n dices for n = 1, 2, 3, 4 or 5 as denominator for all the questions to earn full credits. (a)throw one die, (b) throw two dice, (c) throw three dice (d) throw 4 dice, (e) throw 5 dice