Finding Slope and Y-Intercept

This video tutorial covers lesson 5.2, focusing on writing equations from a table. It reviews how to find the slope and y-intercept from a table and use these values to write the equation of a line. The lesson includes two examples: one with a basic table and another with a cell phone plan. The video concludes with practice recommendations and emphasizes the connection between tables, graphs, and equations.

What is the main goal of Lesson 5.2?

• To practice solving inequalities

• To learn how to graph equations

• To review how to find slope and y-intercept from a table

• To understand quadratic equations

Which formula is used to find the slope from a table in this lesson?

• a^2 + b^2 = c^2

• m = delta y over delta x

• y = mx + b

• y2 - y1 over x2 - x1

What is the first step in finding the slope from a table?

• Identify the y-intercept

• Use the formula y = mx + b

• Graph the points

• Determine delta y and delta x

What is one method to find the y-intercept from a table?

• Use the quadratic formula

• Use the midpoint formula

• Identify the y-value when x is zero

• Calculate the average of x and y

What should you do if there is no zero in the x column when finding the y-intercept?

• Use the first option with slope and an ordered pair

• Graph the equation instead

• Skip finding the y-intercept

• Use the quadratic formula

What is the slope-intercept form of a linear equation?

• x = y + b

• a^2 + b^2 = c^2

• ax^2 + bx + c = 0

• y = mx + b

After finding the slope and y-intercept, what is the next step?

• Graph the equation

• Substitute them into the slope-intercept form

• Find the midpoint

• Calculate the average

In the first example, what is the slope of the line?

• 4

• 0

• 2

• 1

In the cell phone example, what does the y-intercept represent?

• The cost for unlimited minutes

• The base cost with zero minutes

• The total cost for 100 minutes

• The cost per minute

What does the slope represent in the cell phone example?

• The total cost

• The base cost

• The cost per minute

• The number of minutes