Answer: y = 
Step-by-step explanation:
1. Find the slope
2. Substitute the slope, along with x and y coordinates into linear equation to solve for y-intercept
3. Write equation
I'm kind of late but if you need more help, feel free to ask :)
3 miles is 4.8 kilometers which divided by 4 is 0.75 miles
1a. 5/10 can be simplified to 1/2. (5 divided by 5 is one, 10 divided by 5 is 2.)
1b. 9/12 can be simplified to 3/4. (9 divided by 3 is 3, 12 divided by 3 is 4.)
1c. 12/18 can be simplified to 2/3. (12 divided by 6 is 2, 18 divided by 6 is 3.)
1d. 9/24 can be simplified to 3/8. (9 divided by 3 is 3, 24 divided by 3 is 8.)
1e. 27/90 can be simplified to 3/10. (27 divided by 9 is 3, 90 divided by 9 is 10.)
1f. 40/48 can be simplified to 5/6. (40 divided by 8 is 5, 48 divided by 8 is 6.)
Let x = the first number
Let x - 9 = the second number
Let 2(x - 9) = the third number
Now we are told that:
x + (x - 9) + 2(x -9) = 4x - 27 = 109
This means that x = 34 - the first number
25 = the second number
50 = the third number