(-1,5) (2,-5) what is the slope can anyone please help

Svetlana's hair is 4 4 centimeters ( cm cm) long. her hair grows 1 . 5 cm 1.5cm per month. svetlana wants her hair to be less than 1 6 cm 16cm long. write an inequality to determine the number of months, m m, svetlana can allow her hair to grow so that it is less than 1 6 cm 16cm long.

Can you me find the missing length. i attached an image.

2x + 3y = 17 5x + 6y = 32 usibg method if elimination