Answer:
C, E
Step-by-step explanation:
The unit rate represented by the point (x, y) is y/x. To find which rates are lower than 3/5, we can find the difference ...
... 3/5 - y/x
If that difference is positive, then the rate represented by the table is lower.
That difference is ...
... (3x -5y)/(5x)
Since we're only interested in the sign, we only need to compute the numerator value.
A. 3·3 -5·4 = -11 . . . . . the table has a higher rate
B. 3·5 -5·4 = -5 . . . . . the table has a higher rate
C. 3·31 -5·18 = 3 . . . . the table has a lower rate
D. 3·18 -5·11 = -1 . . . . the table has a higher rate
E. 3·12 -5·7 = 1 . . . . . the table has a lower rate
Choices C and E are appropriate.
