Guess the mystery
the number is less than 190,000 and greater than 180,000
5,000 more than the number has 187 thousands
200 less than the number has 4 hundreds

The number is less than 190,000 and greater than 180,000
5,000 more than the number has 187 thousands
2000 less than the number has 4 hundreds

180, 000 <n> 190, 000
180,000 + 2000 = n = 5000-187, 000
182,000 = n = 182, 000  
Or, 
 180, 000 <n> 190,000                    
 n + 5000= 187, 000                           n – 2000 = 180, 000
 n= 187, 000- 5000                             n = 180, 000 + 2000
 n= 182, 000                                       n= 182, 000

4+2=-2. 1+2=3. y=-2/3x+b. 2=4/3+b. 2/3=b. the answer is y= -2/3x+2/3