BESTIES I NEED HELP THIS IS IMPORTANT here are the questions, I'll attach the graph

A) Find the slope of the line. Explain your reasoning
B) Write an equation of the line
C) Find the values for a and b. Explain your reasoning​

Question part points submissions used suppose that 100 lottery tickets are given out in sequence to the first 100 guests to arrive at a party. of these 100 tickets, only 12 are winning tickets. the generalized pigeonhole principle guarantees that there must be a streak of at least l losing tickets in a row. find l.

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15