A line has a slope of -8 and includes the points (-10, 0) and (-9, z). What is the value of Z?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Hi, can anyone show me how to do this problem? 100 points for this. in advance

(x-5)1/2+5=2 what is possible solution of this equation