[tex]format \: \: y = mx + c[/tex]
[tex]m = \frac{5 - 0}{10 - 0} = \frac{5}{10} = \frac{1}{2} [/tex]
[tex]c = 0 \: since \: the \: line \: passes \: through \: the \: origin \\ [/tex]
[tex](d) \: \: \: y = \frac{x}{2} [/tex]
