Ineed but serious answers 20 points

so if you're looking at points trying to determine if they're a function for example: (9,8), (10,2)

you have to make sure that the x is never the same in any of the points. like the first number (9 and 10) cant be the same or else it isnt a function.

if you're looking at it on a graph, you can use the pencil check, you run your pencil or a ruler(something straight) across the graph, and if it touches more than one point at once, then it isn't a function

if you're looking at it from a chart with two bubbles and lines, the lines can't come out of the same number more than once on the left bubble

idk

step-by-step explanation:

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

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