the ordered pairs given represent the input (x) and output (y) values from the given equation.
points are (0, 10), (1, 5), and (2, 2.5)
f(x)=10(0.5)x
y=10(0.5)(0)=0
y=10(0.5)1=5
y=10(0.5)*2=10
means every time u give input increase by one the output is also increasing by 5 so answer is 5
