Question

Ryker is given the graph of the function

Answer 1

You can just set y=0 and solve for x.  when you do this you should get 1/2x^2=4
x^2=8
x=2.8 and -2.8 ( you have both a positive number and negative number since (-2.8)^2=(2.8)^2 =8
I hope this helps