Plot three points with first coordinate equal to (-2.8) and join them
To plot three points with a first coordinate of -2.8, you need two more coordinates for each of those points. Allow me to explain how to plot these points on a Cartesian plane.
1. Let's start by understanding the Cartesian plane. It consists of two perpendicular lines called the x-axis (horizontal) and the y-axis (vertical). The point where these lines intersect is called the origin, denoted by (0,0).
2. Now, to plot the first point with a first coordinate of -2.8, choose a value for the second coordinate (y-coordinate) for this point. For example, let's say the y-coordinate is 4.
3. Place your pencil on the x-axis at -2.8 and move up vertically until you reach 4. This is your first point, (-2.8, 4).
4. Repeat the process to plot the second point. Let's say its y-coordinate is -1. Start at -2.8 on the x-axis and move up (in a negative direction) until you reach -1. This gives you the second point, (-2.8, -1).
5. Lastly, plot the third point using a y-coordinate of 6. Begin at -2.8 on the x-axis and move up until you reach 6. This will give you the third point, (-2.8, 6).
6. After plotting the three points, take your pencil and connect them in the order they were plotted. This will create a line that joins these three points.
And that's how you can plot three points with a first coordinate of -2.8 and join them on a Cartesian plane!