This topic covers: - Solving quadratic equations - Graphing quadratic functions - Features of quadratic functions - Quadratic equations/functions word problems - Systems of quadratic equations - …

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.

We've seen linear and exponential functions, and now we're ready for quadratic functions. We'll explore how these functions and the parabolas they produce can be used to solve real-world problems.

Sal finds the zeros, the vertex, & the line of symmetry of quadratic functions given in vertex form, factored form, & standard form.

This topic covers: - Solving quadratic equations - Graphing quadratic functions - Features of quadratic functions - Quadratic equations/functions word problems - Systems of quadratic equations - …

What is a quadratic? A quadratic is a type of function that can be written in the form f (x) = a x 2 + b x + c , where a , b , and c are constants.

Unlike the graphs of linear functions, the graphs of quadratic functions are nonlinear: they don't look like straight lines. Specifically, the graphs of quadratic functions are called parabolas.

Inputs and outputs of a function Learn Worked example: matching an input to a function's output (equation)

Practice Quadratic word problems (factored form) Get 3 of 4 questions to level up!

Identify the form of a quadratic function that immediately reveals a given feature of that function. Features in question are the y-intercept of the graph, the zeroes ("roots") of the function, and the …