Question 153930
y = 5x - 2 
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You make plots by finding a number of points and then connecting them.
In this case, it's linear, meaning it's a straight line plot, so 2 points is sufficient.  You can find any 2 points.  I'll find the points where it crosses the X and the Y axes.
Y intercept:
Set x = 0
y = 0 - 2
So the point is (0,-2)
X intercept:
Set y = 0
0 = 5x - 2
5x = 2
x = 2/5
So the point is (0.4,0)
Plot those 2 points and draw a straight line through them.