(if you can) me with these geometry questions

What is the equation of this graphed line? enter your answer in slope-intercept form in the box.

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point

Determine the standard form of the equation of the line that passes through (-2,0) and (8,-5)