Every point of that given function is in the form (x,y). The x coordinate is always listed first. The domain is the set of allowed x values of a function. All we do is list the x coordinates of each point. Optionally you sort the x values from smallest to largest just to keep things consistent. Though a set like {1,2,3} is the same as {3,1,2}.
Side note: the range is the set of possible y values of a function
The equation would be 4x+5y=6.33 and 3x+3y=4.11 so from their you would do the calculations and get 0.52 and 0.85 To make sure the caluclations aare right you just hae to put in the numbers for the x and y 4(0.52)+5(0.85)=6.33 So 1 donutis $).52 1 large coffee is $0.85
