Algebra I: Determine number of solutions of a quadratic from its equation
This is a free lesson from our course in Algebra I
 
   
In this you'll learn how to determine number of solutions of a quadratic equation. For a given general quadratic equation y = ax2 + bx + c, the number and type of roots can be determined by graphing it on the cartesian plane. If you do that, the x-intercepts will be the solutions or roots of the equation. If the graph intersects the x-axis only at one point, then the roots are real and equal, and the quadratic equation has only one solution.If the graph intersects the x-axis at two points, then the roots are real and distinct, and the quadratic equation has two solutions. If the does not intersect y-axis at all, then the roots are imaginary.
<h2> Determine number of solutions of a quadratic from its equation - Watch video (Algebra I)</h2> <p> determine, solutions, video, roots, graphing, quadratics equation, x intercept, intersection point, factoring, point, roots, equation, practice questions, quizzes</p> <p> If the graph intersects the x-axis at two points, then the roots are real and distinct, and the quadratic equation has two solutions. If the does not intersect y-axis at all, then the roots are imaginary.</p>
Other useful lessons:
A comparison of graphical solution and factoring derived solution
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