No; a domain value has two range values.
x = -2 then y = 1 and 2
they would form a vertical line, which tells us that it's not a function
If this an angle on a straight line the answer is k=73°
Answer:
(-9, -3) - Interval over which the difference of the numbers of sales is negative.
(4.9, 10 ) - Interval over which the difference of the numbers of sales 15 positive
(-3, 10) - Interval over which the difference of the numbers of tale decreasing
(0, 4.9) - Interval over which the difference of the numbers of sales is increasing
Hope this helps!
