Pls help
I will award brainlist thing
Pls answer all the questions

Answer:
7.) slope=-2/5 y-intercept= -2
8.) slope= -4/9 y-intercept=-3
9.) slope=1/5 y-intercept=5
10.)m= -3
11.)m= 2/5
12.)m=2.5
Step-by-step explanation: