Answer:
Answer = 3
Step-by-step explanation:
Constant of proportionality = slope

Hi! Going from equation one, you should put your starting point at negative 10. Then make an over-arrow over to negative five showing where you added five. After this, make another arrow from negative five to seven. Then you’re done! Hope this helps!
Step-by-step explanation:
some to check if it correct
we are given
point for f(x) is (-5,-2)
Whenever we need to find point for a*f(x) , we will multiply a by y-value
Here , we have 2f(x)
so, we will multiply 2 units to y-value
y-value is -2
new y-value will be 2*-2=-4
so,
point for 2f(x) will be (-5,-4)........Answer