Length of AB on Parabola 4x2+7x-1 - Find the Solution

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SUMMARY

The discussion focuses on determining the length of line segment AB on the parabola defined by the equation f(x) = 4x² + 7x - 1, where the origin serves as the midpoint of AB. Participants suggest starting by defining the coordinates of points A and B as A(x_A, f(x_A)) and B(x_B, f(x_B)). The next step involves calculating the midpoint of AB and setting it equal to the origin (0,0) to derive the necessary equations for solving the problem.

PREREQUISITES
  • Understanding of quadratic functions and their properties
  • Knowledge of midpoint formula in coordinate geometry
  • Ability to manipulate algebraic equations
  • Familiarity with graphing parabolas
NEXT STEPS
  • Study the properties of quadratic functions, specifically f(x) = 4x² + 7x - 1
  • Learn how to apply the midpoint formula in coordinate geometry
  • Explore methods for solving quadratic equations
  • Practice graphing parabolas and identifying key points
USEFUL FOR

Students studying algebra, particularly those working on quadratic equations and geometry, as well as educators looking for examples of real-world applications of parabolic functions.

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Homework Statement


points A and B are on the parabola f(x)=4xsquared + 7x-1, and the origin is the midpoint of AB, find the length of AB

Homework Equations





The Attempt at a Solution


I have spent time drawing out graphs and such but I am totally lost as to where to begin
 
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Start off by letting the coordinates be [tex]A(x_A,f(x_A))[/tex] and [tex]B(x_B,f(x_B))[/tex]. Now, what would be the midpoint of of AB in terms of these coordinates?
 

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