We will answer only one linear equation.
To find the x-intercept of the linear equation, we have y = 0, and then solve for x:
[tex]y=\frac{1}{5}x+3\Rightarrow y=0\Rightarrow\frac{1}{5}x+3=0\Rightarrow\frac{1}{5}x=-3\Rightarrow x=-15[/tex]The graph for this linear equation (y = (1/5)*x + 3) is:
As we can see this is the graph, we can check that for y = (1/5)*x + 3, and the x-intercept is x = -15.