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Math: Pre-K - 8th grade; Pre-K through grade 2 (Khan Kids) Early math review; 2nd grade; 3rd grade; 4th grade; 5th grade; 6th grade; 7th grade; 8th grade; 3rd grade math (Illustrative Math-aligned)
Math: Get ready courses; Get ready for 3rd grade; Get ready for 4th grade; Get ready for 5th grade; Get ready for 6th grade; Get ready for 7th grade; Get ready for 8th grade
Graphing quadratics in factored form (video) | Khan Academy. If you're seeing this message, it means we're having trouble loading external resources on our website.
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Learn how to graph any quadratic function that is given in standard form. Here, Sal graphs y=5x²-20x+15. Created by Sal Khan.
Graph quadratic functions given in the standard form ax²+bx+c. For example, graph y=5x²-20x+15.
Lesson 9: Standard form. Intro to linear equation standard form. Graphing a linear equation: 5x+2y=20. Graph from linear standard form. Converting from slope-intercept to standard form.
Review of absolute value equations and graphs with interactive exercises and examples.
Different forms of quadratic functions reveal different features of those functions. Here, Sal rewrites f(x)=x²-5x+6 in factored form to reveal its zeros and in vertex form to reveal its vertex.