Use the ALEKS graphing calculator to find the vertex and x-intercept( l ) for the quadratic function.f(x)=−3x2−11x−5Round to the nearest hundredth if necessary.If there is more than one x-intercept, separate them with commas.If applicable, click on
Q. Use the ALEKS graphing calculator to find the vertex and x-intercept( l ) for the quadratic function.f(x)=−3x2−11x−5Round to the nearest hundredth if necessary.If there is more than one x-intercept, separate them with commas.If applicable, click on
Identify Coefficients: Identify the coefficients of the quadratic equation.The quadratic function is given by f(x)=−3x2−11x−5. Here, a=−3, b=−11, and c=−5.
Calculate Vertex: Calculate the vertex of the parabola.The vertex formula for a parabola is (x=−2ab,y=f(−2ab)).x-coordinate of vertex = −(−11)/(2∗(−3))=611≈1.83y-coordinate of vertex = −3(611)2−11(611)−5=−3(36121)−6121−5=−36363−6121−5=−60.58Vertex: (1.83,−60.58)
Calculate X-Intercepts: Calculate the x-intercepts using the quadratic formula, x=2a−b±b2−4ac.Discriminant = (−11^2 - 4\cdot(−3)\cdot(−5) = 121 - 60 = 61\)x1 = 2⋅(−3)−(−11)+61=−611+7.81=−3.14x2 = 2⋅(−3)−(−11)−61=−611−7.81=−0.53X-intercepts: (−3.14,0, −0.53,0)
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