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