Is this linear y=4000-70x if it is how do you know

if we rearrange this we get y=-70x+4000 (only swapped them around) which is the same as the linear equation of y=mx+c as m is -70 and c is 4000 so it is linear

the answer to your question a or b but i am pretty sure it is b. i hope this : )

step-by-step explanation:

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.