Week 16 TEST(8th):Real World Functions(QualGrph/Christmas

Front

What do children receive on Christmas Day?

Back

presents

Front

What is the starting temperature in the tank?

Back

82 degrees

Front

What is the initial value when Mr. Jerry bought a new iPhone for $250 and paid $50 per month?

Back

$250

Front

Write a linear equation to model Paul the plumber's charges if he charges $25 for a service call and $100 an hour. Let x be the number of hours worked.

Back

y = 100x + 25

Front

What is another meaning of y-intercept?

Back

initial value

Front

Define a linear function.

Back

A function that graphs to a straight line, represented by the equation y = mx + b.

Front

What does the slope of a line represent in a real-world context?

Back

The rate of change between two variables.

Front

What is the formula for calculating the total cost if a service has a fixed fee and a variable hourly rate?

Back

Total Cost = Fixed Fee + (Hourly Rate × Number of Hours)

Front

What is the significance of the x-intercept in a graph?

Back

The point where the graph crosses the x-axis, indicating where the output (y) is zero.

Front

How do you interpret the initial value in a real-world function?

Back

It represents the starting point or value before any changes occur.