What condition does a function need to meet in order to be invertible? the topic is linear functions, classifying linear functions and finding inverses.
please i need help

A function must be "one-to-one" in order to be invertable meaning that each y-value is associated with only one x-value. You can easily check to see if a function is invertable by using the "horizontal line test" where you run your finger up and down the graph and if at any point your finger is touching two or more points the graph has failed the test.

a. she will receive a refund of $278.

step-by-step explanation:

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step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or