Finding the rate of change from a graph

The video tutorial explains how to find the rate of change from a graph, focusing on linear graphs. It introduces the concept of slope as the rate of change between two quantities, typically represented as the change in y-values over the change in x-values. The tutorial provides a detailed example of calculating slope using two points and explains the importance of understanding change through subtraction. It also discusses different methods to interpret slope from a graph, emphasizing that the direction of reading the graph (left to right or right to left) affects the sign of the slope but not its magnitude.

What is the rate of change in the context of a linear graph?

• The product of X and Y values

• The sum of X and Y values

• The difference between two points

• The ratio of the change in two quantities

How do you calculate the change in a quantity?

• By dividing the values

• By subtracting the values

• By multiplying the values

• By adding the values

What is the general formula for calculating slope?

• Difference of Y values over X values

• Sum of Y values over X values

• Product of Y values over X values

• Ratio of X values over Y values

When reading a graph from left to right, how do you determine the slope?

• By multiplying the X and Y values

• By adding the X and Y values

• By counting the number of points

• By measuring the vertical and horizontal changes

Why are the slopes calculated from left to right and right to left equivalent?

• Because they result in the same numerical value

• Because they are calculated using addition

• Because they ignore the direction of the graph

• Because they use the same points