Question: Simple Point Plotting in TA

I'm just getting started with Maple TA (version 5). Playing with making plots based on algorithmic variables.

I would like to choose 2 random variable to use as x and y values...

$a=range(-5,5,1);
$b=range(-5,5,1);

...and plot the point defined by ($a,$b).

 

I can plot a function using this command...

$plot1=plotmaple("plot($a*x+$b,x=-10..10,y=-10..10)");

...but I can not find any resources anywhere that have successully shown me how to plot just a point, only functions.

Any help would be appreciated.

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