Functions trip up a lot of students at first. Once you know the two tricks below, you can check almost anything fast, whether it shows up as a graph or a table. There are two ways to check this, and it depends on whether you're looking at a graph or a table. Let's walk through both. If they give you a graph Draw a vertical line straight through the graph. Then look at how many times that line touches the graph. If the line touches the graph more than once, it is not a functio

Math can feel like a puzzle sometimes, but once you break it down, it’s not so bad. Let’s talk about some key parts of a quadratic function: the vertex, minimum or maximum, and the axis of symmetry. If you’re dealing with a parabola (that U-shaped curve), knowing these will help you understand how it moves and where it’s going. What’s a Vertex? The vertex is the highest or lowest point of a parabola. It’s like the peak of a mountain or the bottom of a valley. You find it by u

Trigonometric functions are essential in mathematics, particularly in the study of triangles and the modeling of periodic phenomena. These functions include sine (sin), cosine (cos), and tangent (tan), which are the primary trigonometric functions. Each function relates the angles of a triangle to the ratios of its sides. Sine (sin): This function represents the ratio of the length of the opposite side to the hypotenuse in a right-angled triangle. Cosine (cos): This is the ra