That is the equation for a straight line....
Find the y axis intercept by setting x = 0
Find the x axis intercept by setting y= 0 Plot those points....then draw the line through them......
Set y= 0 0 = -7/3 x + 2
-2 = -7/3 x ----------> x = 6/7 y = 0 plot that point
Set x= 0 y = (-7/3)(0) + 2 -------> x= 0 y = 2 plot that point then draw a line through the two points.....