Complete a table and graph a linear function
Use slope and intercept to complete tables and graph a linear relationship.
Lesson 3
Concept
A linear function has constant rate of change. For y = mx + b, each +1 in x changes y by m, and b is the y-intercept.
Try it
Given y = 2x - 3, complete values for x = -1, 0, 2 and graph the three points.
Graphing from an equation
These steps are out of order — can you fix them?
1.Find two or more points
2.Substitute x-values into the equation
3.Plot points and draw the line
4.Interpret slope/intercept
Short Answer
Why is a table useful before graphing a line?