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The slope, m of a line that passes through two points (x₁,y₁) and (x₂,y₂) is given by the slope formula:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Notice that the given line (from its graph) passes through the points (0,0) and (2,1).
Hence, substitute (x₁,y₁)=(0,0) and (x₂,y₂)=(2,1) into the slope formula:
[tex]m=\frac{1-0}{2-0}[/tex]Simplify the expression for the slope:
[tex]m=\frac{1}{2}[/tex]The required slope of the line is 1/2.