Can someone me on e and f i dont understand it and pls explain

First, you must find the slope of the original line (-1, 1) and (2, -3). The slope will be 4. in order to find the perpendicular line that passes through (1, 1), you have to use the perpendicular slope, which is the opposite, and negative. so in this case, the perpendicular slope will be

and to find the line that passes through (1, 1) you have to put this information into point-slope form. so your equation will be

solve that equation to find the answer to E.

then to find the answer to F, just put E into standard form.