Answer:
it is a
Step-by-step explanation:
something perpendicular probably
The constant rate is 4
40 ÷ 10 = 4
80 ÷ 20 = 4
120 ÷ 30 = 4
160 ÷ 40 = 4
They all equal 4 so that is the constant rate.
Brainliest???
everything can be found in the picture
