Solve the equation. Check the solution.
6/7x= - 18

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Could someone me with this question i’ve been stuck on it for 20 minutes