Evaluating Expressions and Ordered Pairs

This video tutorial covers the process of filling out tables and graphing ordered pairs using algebraic expressions. It begins with an introduction to the concepts of rules, tables, and graphs. The video then demonstrates how to use the expressions X minus 7, X plus 3, and 2X plus 5 to fill out tables and plot the resulting ordered pairs on a coordinate grid. The tutorial emphasizes the importance of maintaining consistent rules to ensure a straight line when graphing. Students are encouraged to practice these skills independently.

What is the first step in creating ordered pairs from a table?

• Filling in the variable with a number

• Plotting points on a graph

• Calculating the slope

• Drawing a straight line

If the expression is X - 7 and X is 8, what is the Y value?

• 15

• 7

• 1

• 0

What does a straight line on a coordinate grid indicate about the ordered pairs?

• They are incorrect

• They follow a consistent rule

• They are random

• They form a circle

For the expression X + 3, what is the ordered pair when X is 2?

• (2, 3)

• (2, 5)

• (2, 4)

• (2, 6)

What should you do if a plotted point does not form a straight line?

• Change the graph scale

• Check the ordered pair for errors

• Recalculate the slope

• Ignore it

In the expression 2X + 5, what is the Y value when X is 0?

• 2

• 10

• 5

• 0

How do you interpret the expression X / 3 in terms of ordered pairs?

• Multiply X by 3

• Divide X by 3

• Add 3 to X

• Subtract 3 from X