Answer:
(0, 2 ) and k = 8.5
Step-by-step explanation:
(a)
let x = 0 in the equation and evaluate for y
y - 0 = 2
y = 2
y - 3x = 2 crosses the y- axis at (0, 2 )
(b)
Given y = 2x + c ( where c is the y- intercept and c = - 5 )
Given (k, 12 ) lies on the line then substitute y = 12, x = k into the equation
12 = 2k - 5 ( add 5 to both sides )
17 = 2k ( divide both sides by 2 )
8.5 = k
