Question 307195
Any line that passes through the origin will pass through the point (0,0). So this means that when x=0, then y=0. Plug these values in to get {{{0=3(0)+k}}}. Multiply to get {{{0=0+k}}} and combine like terms to get {{{0=k}}}. So the value of k is {{{k=0}}} meaning that the equation that passes through the origin is {{{y=3x}}}