Exploring LT 4.3 Concepts

This video tutorial covers the basics of linear functions, including how to write equations in the form y = mx + b, analyze data using tables and graphs, and understand proportional relationships. It provides examples such as a savings problem and a skateboard ramp to illustrate these concepts. The tutorial also explains how to write functions from ordered pairs and graph linear functions, concluding with a brain teaser.

What is the y-intercept in the problem where Erik is saving money for a mountain bike?

• $120

• $140

• $250

• $20

How much money does Erik save each week?

• $20

• $10

• $30

• $50

What is the slope of the line representing the height of the skateboard ramp for every 33 inches in length?

• 1/5

• 3/11

• 9/33

• 3/15

If the base length of the skateboard ramp is 110 inches, what is the height?

• 22 inches

• 30 inches

• 27 inches

• 18 inches

What is the slope when the cost to manufacture 5 toys is $17.50 and 10 toys is $30?

• 4.0

• 1.5

• 3.0

• 2.5

What is the y-intercept when the cost to manufacture 5 toys is $17.50 and 10 toys is $30?

• $0

• $10

• $5

• $2.5

What is the equation of the line representing the height of a burning candle over time?

• y = 1x + 5

• y = 1x + 10

• y = -1x + 10

• y = -1x + 5

What is the slope of the line representing the number of pages printed by a printer per minute?

• 1/5

• 1/10

• 10

• 5

What is the y-intercept in the equation representing the number of pages printed by a printer per minute?

• 10

• 0

• 1

• 5

What is the general form of a linear function?

• y = x^2 + b

• y = a/x

• y = ax^2 + bx + c

• y = mx + b