10.1 Exercise 11

For each set of ordered pairs, determine if it represents a function and if so, is the function one-to-one.

ⓐ $\left\{\left(−3 , −6\right) , \left(−2 , −4\right) , \left(−1 , −2\right) , \left(0 , 0\right) , \left(1 , 2\right) , \left(2 , 4\right) , \left(3 , 6\right)\right\}$ ⓑ $\left\{\left(−4 , 8\right) , \left(−2 , 4\right) , \left(−1 , 2\right) , \left(0 , 0\right) , \left(1 , 2\right) , \left(2 , 4\right) , \left(4 , 8\right)\right\}$