A line is defined by the equation 2x + 4y = -8. Determine the equation of another line that will creare a linear system with
(a) no solution
(b) many solucions
(c) one solution

so turn it into the other form:

2x+4y=-8

4y=-2x-8

y=-0.5-2

then:

a) y=-0.5x+44

b) y=-0.5x-2 (itself)

c) y=-55x-2 (they cut each other in (0,-2)

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.