Question

please help with writing equations from tables

Answer 1

 1:  it is 35 because the y coloum is just the adding 7 each time 
 2:  it is 1 not - 1 because it starts with negative
 3:  it is 2 because the y coloum is subtracting by 2 each time
 4:  it is 15 because the y coloum is just adding by ones