Show your dan work. slope x intercept y intercept graph everything
1) (4,5) (3,4)
2(3,2) (3,2)
3) (3, 1) (5,4)
4) (2,5) (4,2)

1) Slope: (4-5)/(3-4)=1
Make a point slope equation: y=(x-4)+5
X-Intercept: -1 Plug 0 in for y and solve
Y-Intercept: 1 Plug 0 in for x and solve

2) Slope: (3-3)/(2-2)=Does Not Exist
You can't find any of these with only one point given

3) Slope: (4-1)/(5-3)=1.5
Write an equation in point slope form: y=1.5(x-3)+1
X-Intercept: 7/3 Plug in 0 for y and solve
Y-Intercept: -3.5 Plug in 0 for x and solve

4) Slope: (2-5)/(4-2)=-1.5
Write an equation in point slope form: y=-1.5(x-2)+5
X-Intercept: 16/3 Plug in 0 for y and solve
Y-Intercept: 8 Plug in 0 for x and solve

Sorry i meant b in the other question