What is the slope of the line

The parabola opens: y=√x-4 (principal square root) up down right left

Which graph represents the equation y =4x

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189