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The integral of a constant is equal to the constant times the integral's variable
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$\left[\frac{-\left(y+9\right)}{2}x\right]_{-9}^{0}$
Learn how to solve problems step by step online. Integrate the function (-(y+9))/2 from -9 to 0. The integral of a constant is equal to the constant times the integral's variable. Evaluate the definite integral. Simplify the expression inside the integral.