Slope means same as inclination of the line
then we have as data two points and its coordinates
(-3,9) and (7,17)
next apply the slope equation
m= Y/X. Where Y= y-y' and. X= x-x'
then
m= (9-17)/(-3-7) =-8/-10 = 4/5
its a positive slope ( goes growing from left to right)
and its value is 4/5