Find values using function graphs

Learning Objectives Identify the x-axis and y-axis on a coordinate plane. Locate and plot points on a coordinate plane given an ordered pair (x, y). Read the ordered pair (x, y) for a given point on a graph. Understand that a graph visually represents a relationship between two quantities. Find the y-value on a graph when given a specific x-value. Find the x-value on a graph when given a specific y-value. Interpret simple real-world scenarios represented by points on a graph. Have you ever looked at a map to find a treasure or a specific location? 🗺️ Math graphs are like special maps that help us find information and understand connections! In this lesson, you'll learn how to read information from graphs drawn on a special grid called a coordinate plane. This skill h...

TermDefinitionExample Coordinate PlaneA flat surface made of two number lines that cross each other, used to locate points.Imagine a checkerboard; it's like a coordinate plane where each square has a specific address. x-axisThe horizontal (left-to-right) number line on the coordinate plane.When you walk across a room, you are moving along an imaginary x-axis. y-axisThe vertical (up-and-down) number line on the coordinate plane.When you climb stairs, you are moving along an imaginary y-axis. OriginThe point where the x-axis and y-axis cross, located at (0,0). It's the starting point for finding other points.The exact center of a target is like the origin (0,0). Ordered PairA pair of numbers (x, y) that tells you the exact location of a point on the coordinate plane. The first num...

Locating a Point (x, y) To find a point `(x, y)`: Start at the origin `(0,0)`. Move horizontally along the x-axis by `x` units (right if `x` is positive, left if `x` is negative). Then, from that spot, move vertically along the y-axis by `y` units (up if `y` is positive, down if `y` is negative). Use this rule to plot a point on the coordinate plane when you know its ordered pair, or to identify the coordinates of a point already plotted. Finding y-value from a given x-value on a graph 1. Find the given `x`-value on the x-axis. 2. Move vertically (straight up or down) from that `x`-value until you reach a point on the graph. 3. From that point on the graph, move horizontally (straight left or right) until you reach the y-axis. The number you land on is the corresponding `y`-va...