Learn how to evaluate a function for a given value

The video tutorial explains the concept of functions in mathematics, focusing on the relationship between input and output values. It demonstrates how to calculate the output of a function by substituting a given input value into the function's rule. The example used involves calculating the output for an input value of 4 in the function F(x) = 17x + 3, resulting in an output of 71. The tutorial also covers how to express the input-output relationship as a coordinate point, concluding with a brief clarification session.

What is the primary purpose of a function in mathematics?

• To solve algebraic expressions

• To establish a relationship between input and output

• To create complex equations

• To graph linear equations

If the input value is 4, what is the first step in finding the output using the function 17x + 3?

• Multiply 4 by 3

• Add 3 to 4

• Replace x with 4 in the function

• Divide 4 by 17

What is the output when the input value 4 is substituted into the function 17x + 3?

• 17

• 68

• 71

• 34

How do you express the input and output of a function as a coordinate point?

• By listing the input and output in a table

• By writing the input and output as a fraction

• By writing the input and output as (input, output)

• By graphing the input and output on a number line

What coordinate point represents the input 4 and output 71?

• (71, 17)

• (71, 4)

• (4, 71)

• (4, 17)