What is the sum of one-half u subtracted from 3 times u

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

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