If y = 5.7 when x = –3.99, what is y when x = –0.49?
Answer
0.34
–0.34
–0.7
0.7

Question

If y = 5.7 when x = –3.99, what is y when x = –0.49?
Answer
		0.34
		–0.34
		–0.7
		0.7

anonymous · Answer

y1       5.7            y2
-- = ------ = ------
x1      -3.99        x2

so

   5.7            y2
------ = ------
 -3.99        -0.49
this gives

5.7 * -0.49
---------- = y2
   -3.99

y2 = 0.7

so the answer is 0.7