The straight line joining the points P(9,-1) and Q(6,5) has a gradient of -3, find the value of k.
An equilateral triangle has one vertex at the origin another on the v-avis and the third in​

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.