Answer:
y = -
x + 4 is correct
Explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m =

with (x₁, y₁ ) = (0, 4 ) and (x₂, y₂ ) = (6, - 5 )
m =
=
= -

the line crosses the y- axis at (0, 4 ) ⇒ c = 4
y = -
+ 4 ← equation of line