What is an equation of the line perpendicular to the line represented by y=−23x+1 and with the same y-intercept as the line represented by y=5+7x?

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

The highest point on earth is the peak of mount everest if you climb to the top you would be approximately 29,035 feet above sea level at remembering that amount is 5280 feet percentage of the height of the mountain would you have to climb to reach a point 2 miles above sea level

Reflect the point (7,0) across the y-axis