Question 1182675
a) whether cooeficient is positive or negative: A.................B............C................D
................................................................................positive...positive...negative...negative

function hav V shape graph: in A and B graph is up (means cooeficients A and B are positive numbers) , and in C and D graph is down (means cooeficients C and D are negative numbers)

b) the cooeficient closest to zero: A.................B............C................D

.................................................................1.................1............-1............-1