Melody is correct, rosala......"visualizing" graphs often takes some experience....this one isn't too bad, however.....
When we have something that has the form y = mx ± b, this is always a graph of a line ...
We don't even need to make a "table" in this case.....just pick two values for "x" and find their corresponding "y's".......this will give us two points on the graph....then, we only need to "connect the dots"
For instance, if we let x = 0 in the above equation y then = 1. And if we let x = 1, then y = 3. So we have two points, (0, 1) and (1, 3). All we need to do is to plot these on the graph and draw a line between them......voila !!!.....there's our graph !!! Check out the graph I generated in Desmos in the web link...you'll see that those two points are on the graph !!!
BTW ......you might want to give Desmos a try......it's easy to use, and you can get some practice in recognizing some different graphs just playing around with it......!!! Also, some advanced courses like calculus enable you to visualize some pretty complicated stuff by using a technique known as "curve sketching" .....(you'll get to that later, of course !!!)
