Does each ratio form a proportion?

1: 12/32, 8/3
2: 5.1/1.7, 7.5/2.5
3: 8.5/25, 17/50

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?

Can someone tell me if this is perpendicular? !

On a piece of paper, graph y< x-1. then determine which answer choicematches the graph you drew.13. z3. 2(3.290-1)