Find the Equation of the Line

Question 1:

With gradient -1
through the point
(1,9)
y = x+10

Question 2:

With gradient 5
through the point
(1,-7)
y =5 x12

Question 3:

With gradient 1
through the point
(-3,2)
y = x+5

Question 4:

With gradient -1
through the point
(9,1)
y = x+10

Question 5:

With gradient 1 2
through the point
(6,-3)
y = 1 2 x6

Question 6:

With gradient -5
through the point
(4,3)
y = 5 x+23