What’s a vertical stretch and a vertical shrink? ?

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

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?