Understanding Slope and Y-Intercept from a Graph

What is the first step in finding the slope and y-intercept from a graph?

• Draw a line through any two points.

• Estimate the slope visually.

• Directly use a calculator.

• Label the graph and find two clear points.

Which two points are used in the example to find the slope?

• (3, 20) and (1, 5)

• (4, 30) and (0, 0)

• (2, 15) and (0, 0)

• (5, 25) and (0, 0)

What is the purpose of creating a T-chart in this process?

• To draw a line on the graph.

• To organize the points for calculator input.

• To estimate the slope manually.

• To find the midpoint of the points.

In the calculator, what does the 'a' value represent?

• The slope

• The x-coordinate

• The y-intercept

• The midpoint

What is the y-intercept value found in the example?

• 4

• 0

• 30

• 7.5