Which graph represents ? Choose 1

D

Step-by-step explanation:

-14x-7y < 4

There is no equals sign so we know that is must be a dotted line

Add 14x to each side

-7y < 14x+4

Divide by -7, remembering to flip the inequality

-7y/-7 > 14/-7 x+4/-7

y > -2x -4/7

Y is greater so we shade above

t > 8

Step-by-step explanation:

Given that :

Initial volume = 16 litres

Addition rate = 4 litres per minute

Target volume > 48 litres

Let number of minute for which water is added to achieve these = t

Mathematically,

Initial volume + (addition rate * t) > target volume

16 + 4t > 48

Collect like terms

4t > 48 - 16

4t > 32

Divide both sides by 4

4t/4 > 32/4

t > 8

Laura will need add water at 4 Litre per minute rate for more than 8 minutes