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Solved Examples
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BBB Estimate the solution of the equation 5x2 = 20 using a graph.
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BBB Use the graph to find the solution of - 2x2 + 8 = 0. BBB View Solution
BBB Find the solutions of the quadratic equation x2 - 2x - 3 = 0 using the graph.
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BBB Solve the quadratic equation - 4x2 - 4x + 8 = 0 using the graph. BBB View Solution
BBB Find the solution of 2x2 - 8 = 0 using the graph. BBB View Solution
BBB Solve by graphing the related function of the equation - 3x2 = - 27. BBB View Solution
BBB Solve by graphing the related function of the equation - x2 + 9x - 20 = 0.
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BBB Solve by graphing the related function of the equation - x2 - 2x + 3 = 0. BBB View Solution
BBB Solve by graphing the related function of the equation 5x2 + 7 = 52. BBB View Solution
BBB Solve the equation - x2 + 4 = 0 using the graph.
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BBB Use the graph to estimate the roots of the equation x2 + x = 2.
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BBB Estimate the solution of x2 - x = 6 using the graph.
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BBB Find the roots of the quadratic equation x2 + 5 = 6 using the graph. BBB View Solution
BBB The graph of y = 3x2 - 9x is shown. Estimate the solution of 3x2 - 9x = 0 using the graph.
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BBB Estimate the solution of 2x2 - x = 3 using the graph. BBB View Solution
BBB Find the x-intercepts by graphing the related function of the equation - x2 - 4x = 3.
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BBB Find the x-intercepts by graphing the related function of the equation x2 + 3x - 4 = 0.
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BBB Find the roots by graphing the related function of the quadratic equation 14x2 - 12x - 2 = 0. BBB View Solution
BBB 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. BBB View Solution
BBB Use the graph to find the distance between the vertices of y = ax2 + c and y = ax2.
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BBB 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? BBB View Solution
BBB The graph of y = 12x2 - 2 is shown. Using the graph, estimate the solution of 12x2 - 2 = 0. BBB View Solution
BBB Which of the following equations has the roots shown in the graph? BBB View Solution
BBB 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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BBB The graph of y = 3x2 - 4x - 7 is shown. Estimate the solutions of 3x2 - 4x - 7 = 0 using the graph. BBB View Solution