Answer:
21
Step-by-step explanation:
y-y over x-x
12-3=9 8-2=6 change in y over change in x is 9/6 or 3/2. 3/2 times 14 is 21...or adding 6 to the x causes adding 9 to the y. 6 is added again to 8 to make fourteen. since the same thing is happening. then do the same to the x. add 9. 12 plus 9 is 21. tell me if this helps
