Which equation of a line of best-fit reflects a negative correlation? Responses y=170x+312 y is equal to 1 seventieths x plus 312 y=−83−27x+15 y is equal to negative 83 over negative twenty-sevenths x plus 15 y=8x−2 y is equal to 8 x minus 2 y=−6x+13 y is equal to negative 6 x plus 13