4 Steps to Graph a Linear Equation Using a Table | 8.EE.B.5 💗
In this video lesson we will learn that a linear equation in two variables represents the graph of a line. We will discover that any point on the line is a solution to the equation. When the point is written as an ordered pair (x, y), x represents the input and y represents the output. A linear equation has an infinite amount of solutions. We will learn four simple steps to graph a linear equation. We will first select 3 input values, second we will evaluate the linear equation using those input values to find the corresponding output values, third we will graph the ordered pairs from our table on a coordinate plane, and fourth we will draw a line through the three points using a ruler. We will also learn how to recognize and graph horizontal and vertical lines. Student practice is embedded in the lesson with modeled exemplar solutions.
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00:00 Introduction
00:29 What is a Linear Equation?
01:42 What is a Solution of a Linear Equation?
02:22 Using a Table to Graph a Line
04:46 4 Steps to Graph a Line Using a Table
05:44 Student Practice #1
07:09 Graphing a Horizontal Line
08:16 Graphing a Vertical Line
09:04 Student Practice #2
09:44 Student Practice #3
Common Core Math Standard
8.EE.B.5 Graph proportional relationships, interpreting the unit rate as the slope of the graph. Compare two different proportional relationships represented in different ways. For example, compare a distance-time graph to a distance-time equation to determine which of two moving objects has greater speed.