I believe that -15 is the answer
#420
because 70x4=420 within 300 and 500 and is greater than 400 which is a multiple of 100
We know is a horizontal line, so, if it passes through 1,-5, it also passes through "whatever", -5, like 20, -5 or 1000000, -5, or -100000000, -5 and so on.
so, let's pick another point say -7, -5, check the picture below, and let's check about the equation that runs through it,
Answer:
B
Step-by-step explanation:
In the attached file
3947422086
is the answer hope it helps:)