Write an equation in slope Intercept form that passes through (2, 3) and has a slope of -2

1. what is the measure of ∠abc? what is the measure of ∠abd?

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?

Asap! i need this done today and i really don’t understand it. some one ! will mark