question 1,2,3 and b,c

What I Have Learned A. Read and analyze the following statements. If you think the statement suggests an incorrect idea, rewrite it on the given space, otherwise leave it blank. 1. A relation is a set of ordered pairs where the first element is called the range while the second element is the domain. 2. A function can be classified as one-to-one correspondence, one-to-many correspondence and many-to-one correspondence. 3. In a function machine, the input represents the independent variable while the output is the dependent variable. B. In three to five sentences, write the significance of function in showing real-life situations. C. In your own words, discuss when a piecewise function is being used