Question

Use the table to write a linear function that relates y to x

Answer 1

y=4x +0 is the answer

Answer 2

Using the formula y= mx+b
Since the origin is the y-intercept, the b value is 0 (so we can just leave that out of the equation) and then using the slope with is rise over run... as we go up 1, we go over -4 so the b-value is -1/4
So overall, your equation will be:
y=-1/4x