The answer is 3 and one forth i'm pretty sure
So mother is 1 and 3/4 times son
son=3
subsitute
1 and 3/4 times 3
convert 1 to 4/4
4/4 and 3/4=4/4+3/4=7/4
7/4 times 3/1=21/4=5 and 1/4
answer is mother is 5 and 1/4 foot tal
The transformation that shifts the two equations is the equation of the line going down by 9