X^4-6x-7-8y-y^2 help me to solve this question

Plz i beg u asap ! what is the equation of this graphed line? enter your answer in slope-intercept form in the box.

Graph the system of equations on your graph paper to answer the question. {y=−x+4y=x−2 what is the solution for the system of equations? enter your answer in the boxes.

What is the arc length of the subtending arc for an angle of 72 degrees on a circle of radius 4? o a. 8a oc. 16 t d. 8