Functions: Slope, y intercept & equation from a Table | 8.F.B.4

The video tutorial covers the basics of functions, focusing on linear relationships. It guides viewers through finding the Y-intercept, calculating the slope, writing the equation of a line, and verifying if a point lies on the line. The tutorial uses a table of values to demonstrate these concepts, providing step-by-step explanations and encouraging viewers to pause and solve problems independently before reviewing the solutions.

What are the four main tasks discussed in the video related to functions?

• Finding the X-intercept, slope, equation, and graphing the function

• Finding the X-intercept, slope, equation, and verifying a solution

• Finding the Y-intercept, slope, equation, and verifying a solution

• Finding the Y-intercept, slope, equation, and graphing the function

How is the Y-intercept identified from a table of values?

• By finding the point where X is 0

• By finding the point where Y is 0

• By finding the point where Y is 1

• By finding the point where X is 1

What is the Y-intercept of the line if the table shows X=0 and Y=5?

• 10

• 5

• 0

• -5

Which method is NOT used to find the slope of a line?

• Change in Y over change in X

• Slope formula

• Graphical method

• Finding the midpoint

What is the slope of a line if the change in Y is -2.5 and the change in X is 1?

• 2.5

• -2.5

• -1

• 1

What is the equation of a line with a slope of -2.5 and a Y-intercept of 5?

• y = -2.5x - 5

• y = 2.5x + 5

• y = 2.5x - 5

• y = -2.5x + 5

Does the point (9, -17.5) lie on the line y = -2.5x + 5?

• No, it does not satisfy the equation

• Yes, it satisfies the equation

• No, because the Y-intercept is incorrect

• Yes, but only if the slope is positive