Answer:
n=5
Step-by-step explanation:
Given that f(x) from x to y is linear. Hence equation would be that of a straight line. Given (-4,-25) and (-1,-10) are points on the line
Using two point formula we have
[tex]\frac{y+25}{-10+25} =\frac{x+4}{-1+4}\\\frac{y+25}{15}=\frac{x+4}{3}\\y+25 =5x+20\\y=5x-5[/tex]
Using this we can find n for f(x) = y =20
Substitute to get
[tex]20=5n-5\\5n=25\\n=5[/tex]
