Draw the line through the point (4 5) that is parallel to the y-axis

these are simple calculations

It is simply added such as:

x values added/subtract into x values

y values added/subtract into y values

s values added/subtract into s values

a values added/subtract into a values

b values added/subtract into b values

Answer are following :

1) 13x

2) 11x+5y+5

3)7s+2d+11

4)3b+9n-8

5)-6a+5b+15ab

6)6x+4y

7)2x+24y

8)5t+10

9)7x+6y+6

10)12s+3st+8

11) 7t+14

12)6x+7