Background Tutorials

• Understand that a function is a rule that assigns to each input exactly one output. The graph of a function is the set of ordered pairs consisting of an input and the corresponding output.

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    What's a Function?

    You can't go through algebra without learning about functions. This tutorial shows you a great approach to thinking about functions! Learn the definition of a function and see the different ways functions can be represented. Take a look!

• Know the formulas for the volumes of cones, cylinders, and spheres and use them to solve real-world and mathematical problems.

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    What is a Cone?

    Did you know that an ice cream cone is named for its shape? Many ice cream cones are actually cones! Check out this tutorial to see what defines a cone in math. You'll also see the different parts of a cone. Take a look!

• Create equations in two or more variables to represent relationships between quantities; graph equations on coordinate axes with labels and scales.

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    What is the Axis of Symmetry of a Quadratic Function?

    Ever notice that the left side of the graph of a quadratic equation looks a lot like the right side of the graph? In fact, these sides are just mirror images of each other! If you were to cut a quadratic equation graph vertically in half at the vertex, you would get these symmetrical sides. That vertical line that you cut has a special name. It's called the axis of symmetry. To learn about the axis of symmetry, watch this tutorial!

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    What is a Parabola?

    If you graph a linear function, you get a line. If you graph a quadratic function, you get something called a parabola. A parabola tends to look like a smile or a frown, depending on the function. Check out this tutorial and learn about parabolas!