Write an equation of the line that passes through the given point with the given slope. (-1,4) m=-3

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?