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anonymous
 one year ago
what would be the increasing and decreasing intervals of the equation y= 1/3x(squared)+4x+12
anonymous
 one year ago
what would be the increasing and decreasing intervals of the equation y= 1/3x(squared)+4x+12

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campbell_st
 one year ago
Best ResponseYou've already chosen the best response.2is this calculus or algebra...?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This is from my trigonometry class (algebra)

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.2A simple method is to decide is the parabola concave up or concave down Concave up decreasing to the left of the vertex increasing to the right of the vertex Concave Down increasing to the left og the vertex decreasing to the right of the vertex. so you need to find the x value in the vertex... use the line of symmetry for a parabola \[y=ax^2 + bx + c\] the line of symmetry is\[x = \frac{b}{2 \times a}\] you have b = 4 and a = 1/3 substitute them to find the line of symmetry
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