Simplify each expression -2(2x - 5) + 5x + 6
and
x - 5(y + 2) + (3y - x)

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

~