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Use the ALEKS graphing calculator to find the vertex and 
x-intercept( 
" l "_ ) for the quadratic function.

f(x)=-3x^(2)-11 x-5
Round to the nearest hundredth if necessary.
If there is more than one 
x-intercept, separate them with commas.
If applicable, click on "None".

Use the ALEKS graphing calculator to find the vertex and x x -intercept(  l  \underline{\text { l }} ) for the quadratic function.\newlinef(x)=3x211x5 f(x)=-3 x^{2}-11 x-5 \newlineRound to the nearest hundredth if necessary.\newlineIf there is more than one x x -intercept, separate them with commas.\newlineIf applicable, click on

Full solution

Q. Use the ALEKS graphing calculator to find the vertex and x x -intercept(  l  \underline{\text { l }} ) for the quadratic function.\newlinef(x)=3x211x5 f(x)=-3 x^{2}-11 x-5 \newlineRound to the nearest hundredth if necessary.\newlineIf there is more than one x x -intercept, separate them with commas.\newlineIf applicable, click on
  1. Identify Coefficients: Identify the coefficients of the quadratic equation.\newlineThe quadratic function is given by f(x)=3x211x5f(x) = -3x^2 - 11x - 5. Here, a=3a = -3, b=11b = -11, and c=5c = -5.
  2. Calculate Vertex: Calculate the vertex of the parabola.\newlineThe vertex formula for a parabola is (x=b2a,y=f(b2a))(x = -\frac{b}{2a}, y = f(-\frac{b}{2a})).\newlinex-coordinate of vertex = (11)/(2(3))=1161.83-(-11)/(2*(-3)) = \frac{11}{6} \approx 1.83\newliney-coordinate of vertex = 3(116)211(116)5=3(12136)12165=3633612165=60.58-3(\frac{11}{6})^2 - 11(\frac{11}{6}) - 5 = -3(\frac{121}{36}) - \frac{121}{6} - 5 = -\frac{363}{36} - \frac{121}{6} - 5 = -60.58\newlineVertex: (1.83,60.58)(1.83, -60.58)
  3. Calculate X-Intercepts: Calculate the x-intercepts using the quadratic formula, x=b±b24ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}.\newlineDiscriminant = (11(-11^22 - 44\cdot(3-3)\cdot(5-5) = 121121 - 6060 = 6161\)\newlinex11 = (11)+612(3)=11+7.816=3.14\frac{-(-11) + \sqrt{61}}{2\cdot(-3)} = \frac{11 + 7.81}{-6} = -3.14\newlinex22 = (11)612(3)=117.816=0.53\frac{-(-11) - \sqrt{61}}{2\cdot(-3)} = \frac{11 - 7.81}{-6} = -0.53\newlineX-intercepts: (3.14,0(-3.14, 0, 0.53,0-0.53, 0)

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