I am learning about lines of best fit and how to do them on my calculator. I found the correct equation and now I need to find predicted values for x. I have all my x values and I have my equation. Do I need to do each of these manually on my calculator, or how do I put the equation into my calculator and it does it for all the x values at once? I have a ti-84 plus graphing calculator.

I used my calculator to find the line of best fit. From that I wrote my equation of y = 0.634x + 64.945

I know I can put that into my calculator under the y= function.

What I am asking is this == under the L1 function of my calculator is a list of values for x --- is there some way that the calculator will automatically calculate those values for x instead of me doing each one by hand?

.634(18) + 64.945 =
.634(19) + 64.945 =
.634(20) + 64.945 =
etc.
Do I have to do this by hand or is there a way to get my calculator to do it?

I'm pretty sure there's some kind of table operation for your calculator.

Tell you what.
Rather than making me read the manual, why don't you have a go at it?
Or check with google. It has lots of information.

Thanks === I have tried that multiple times == without success. That's why I thought I would ask here.

To find predicted values for x using an equation on a TI-84 Plus calculator, you can utilize the calculator's list functionality. Here's a step-by-step guide:

1. Enter your x values into a list. Press the `STAT` button, then navigate to the `EDIT` menu using the arrow keys. From here, select a list you want to store your x values in (e.g., `L1`).
2. Input your x values into the chosen list. For instance, if your x values are 1, 2, 3, 4, and 5, you can enter them into `L1` as follows: `1`, `2`, `3`, `4`, `5`.
3. Store your equation in the calculator. You can use the `Y=` button to enter your equation into a specific graphing function, such as `Y1`. Make sure to use the variable `x` as a placeholder for the independent variable.
4. Press the `STAT` button again, and navigate to the `CALC` menu using the arrow keys.
5. Choose the `1: 1-Var Stats` option, then select the list containing your x values, which is `L1` in this example.
6. Press the `,` (comma) key.
7. Now, input the equation you stored in step 3, using the `VARS` key and selecting `Y1` or the appropriate graphing function to recall it.
8. Press `Enter` to see the results. The calculator will generate predicted values for each x value in the list `L1`.

By following these steps, you can utilize your TI-84 Plus calculator to easily find the predicted values for x using the equation you have stored.