Exploring Slope and Y-Intercept with Desmos

What is the formula used to find the slope and y-intercept from a graph?

• y = mx + b

• y1 ~ mx1 + b

• y = mx + c

• y2 = mx2 + b

Which of the following points were identified as perfect points from the graph?

• (0, 0) and (5, 10)

• (2, 2) and (4, 8)

• (3, 3) and (6, 12)

• (1, 1) and (3, 7)

What is the first step after identifying the perfect points from the graph?

• Calculating the average

• Finding the midpoint

• Creating a table with x and y values

• Plotting them on a new graph

In Desmos, which button do you press to create a table?

• Multiply button

• Minus button

• Plus button

• Divide button

What are the x and y values entered into the Desmos table for the points (2, 2) and (4, 8)?

• x1: 2, 8; y1: 4, 2

• x1: 4, 8; y1: 2, 2

• x1: 2, 2; y1: 4, 8

• x1: 2, 4; y1: 2, 8

What does the variable 'm' represent in the formula y1 ~ mx1 + b?

• X-Intercept

• Slope

• Constant

• Y-Intercept

What does the variable 'b' represent in the formula y1 ~ mx1 + b?

• Slope

• X-Intercept

• Y-Intercept

• Gradient

If the slope (m) is 3, what does it indicate about the line?

• The line is horizontal

• The line is vertical

• The line rises 3 units for every 1 unit it runs

• The line falls 3 units for every 1 unit it runs

Which keyword indicates the slope in a problem context?

• Constant

• Y-Intercept

• Feet per second

• X-Intercept

Which keyword indicates the y-intercept in a problem context?

• Feet per second

• Gradient

• Slope

• Initial value