Answer:
a) mCD=7
b) mCF=7
c) mFD=7
d) F(2,-14)
Explanation:
Let the coordinates of C and D be (4,0) and (0,-28) respectively and F is the midpoint of CD
a) mCD
Slope formula
mCD=7
b) mCF
mCF=mCD
Hence mCF=7
c) mFD
mFD=mCD
Hence mFD=7
d) Coordinates of F : mid point formula
Mid points Formula
coordinates of F are (2,-14)