The equation given is:
[tex]-7y=-42[/tex]
by solving it for y we have that:
[tex]\begin{gathered} -7y=-42 \\ y=\frac{-42}{-7} \\ y=6 \end{gathered}[/tex]
This means two things; first this in an horizontal line, second the points of the line will always have a y component equal to 6; therefore the y intercept is 6 and there is no x-intercept.
Using the y-intercept (0,6) and the point (1,6) we plot the line:
