Answer:
yes
Step-by-step explanation:
A. you are given that f(1)=5 therefore f(1) cannot also equal 1 unless it is a different equation.
Answer:15
Step-by-step explanation:
i dont care
Answer:
x=4
y=1
Step-by-step explanation:
4x=7y+9
4x+y=17
7y+9+y=17
8y=17-9
8y=8
y=1
so
4x=7*1+9
4x=16
x=16/4
x=4