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Solved Examples
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ccc Estimate the solution of the equation 5x2 = 20 using a graph.
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ccc Find the solution of 2x2 - 8 = 0 using the graph. ccc View Solution
ccc Solve by graphing the related function of the equation - 3x2 = - 27. ccc View Solution
ccc Use the graph to find the solution of - 2x2 + 8 = 0. ccc View Solution
ccc Solve by graphing the related function of the equation - x2 + 9x - 20 = 0.
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ccc Solve by graphing the related function of the equation - x2 - 2x + 3 = 0. ccc View Solution
ccc Find the solutions of the quadratic equation x2 - 2x - 3 = 0 using the graph.
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ccc Solve by graphing the related function of the equation 5x2 + 7 = 52. ccc View Solution
ccc Solve the quadratic equation - 4x2 - 4x + 8 = 0 using the graph. ccc View Solution
ccc Solve the equation - x2 + 4 = 0 using the graph.
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ccc Use the graph to estimate the roots of the equation x2 + x = 2.
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ccc Estimate the solution of x2 - x = 6 using the graph.
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ccc Find the roots of the quadratic equation x2 + 5 = 6 using the graph. ccc View Solution
ccc The graph of y = 3x2 - 9x is shown. Estimate the solution of 3x2 - 9x = 0 using the graph.
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ccc Estimate the solution of 2x2 - x = 3 using the graph. ccc View Solution
ccc Find the x-intercepts by graphing the related function of the equation - x2 - 4x = 3.
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ccc Find the x-intercepts by graphing the related function of the equation x2 + 3x - 4 = 0.
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ccc Find the roots by graphing the related function of the quadratic equation 14x2 - 12x - 2 = 0. ccc View Solution
ccc During summer, the cable connected between two poles sagged and formed a parabola modeled by a quadratic function y = 0.00001x2 + 0.9, where x is the horizontal distance from the middle of the cable(in feet) and y is the vertical distance from the vertex of parabola(in feet). The cable sagged to a maximum height of 1 ft. Calculate the distance between the poles. ccc View Solution
ccc Use the graph to find the distance between the vertices of y = ax2 + c and y = ax2.
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ccc The main suspension cable of a bridge forms a parabola that can be modeled by the quadratic function y = 0.0055x2 + 20 where x is the horizontal distance from the middle of the bridge(in feet) and y is the vertical distance from the road(in feet). The cable is connected to the towers at points that are 240 feet above the road. How far apart are the towers? ccc View Solution
ccc The graph of y = 12x2 - 2 is shown. Using the graph, estimate the solution of 12x2 - 2 = 0. ccc View Solution
ccc Which of the following equations has the roots shown in the graph? ccc View Solution
ccc The graph of y = - 3x2 + 9x is shown in the figure. Estimate the solution of - 3x2 + 9x = 0 using the graph.
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ccc The graph of y = 3x2 - 4x - 7 is shown. Estimate the solutions of 3x2 - 4x - 7 = 0 using the graph. ccc View Solution