Please help me proportional or nonproportial

I'm so close to finishing all these.

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?