Question

See comment.

Answer 1

can u find slope ?

Answer 2

S(1,-6) , H (a,9) , slope of HS = m
The slope of the line through points (x1,y1) and (x2,y2) is given by :
\(\huge m=\frac{y_1-y_2}{x_1-x_2}\)
now,just put the values and find m.

Answer 3

in same manner find slope of EW

Answer 4

got that ^ ?
or need more explanation ?

Answer 5

u there ?