The digit that 3, 71 _ divisible by 9 is 4 and 7
Y=x².
This is te function of a parabola open upward
the domain is all values of x ={x/x∈z}
Domain: -∞, <span>∞
range: -5,</span><span>∞
(the commas mean through; ex.; -5,</span><span>∞..... that means negative 5 thru infinity)</span>
