Question 535492
y = mx + b, which is the slope-intercept form of a linear equation.
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The y-intercept is the point where x=0.  Looking at the slope-intercept equation, you can see that it is (0,b).  In this case, the y-intercept = (0,2).
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y = mx + 2
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The line also goes through the point (6,6).
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So, you have two points:  (0,2) and (6,6).  That means you can draw a line.
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With two points, you also can define the slope.
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m = change in y / change in x = rise / run
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m = (2-6) / (0-6) = -4/-6 = 2/3
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Now we have all the pieces for a the equation.
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y = 2/3*x + 2
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A graph always helps.
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{{{ graph(500,500,-10,10,-10,10,2/3*x+2) }}}