The mean is the average of all the numbers listed in the set. In order to find the mean you must add up all the numbers in the set and divide it by the number of numbers in the set.

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3 years ago

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WILL MARK BRAINIEST!!!!

OLga [1]

$y=ax^2+bx+c\\\\\text{if a}\ \textless \ \text{0 then a parabola op}\text{ening down}\\\\\text{if a}\ \textgreater \ \text{0 then a parabola op}\text{ening up}\\\\\text{We have}\ y=-x^2+2x+6\to a=-1 \ \textless \ 0\\\text{a parabola op}\text{ening down}\to\text{the graph A and B}\\\\y=ax+b\\\\\text{if a}\ \textless \ \text{0 then a graph is decreasing}\\\text{if a}\ \textgreater \ \text{0 then a graph is increasing}\\\\\text{We have}\ y=2x-3\to a=2 \ \textgreater \ 0\\\text{a graph is increasing}\to \text{the graph B and D}\\\\\text{Therefore your answer is B}$

7 0

3 years ago