Graphing Rational Numbers and Ordered Pairs

This video tutorial covers lesson 12.1 on graphing rational numbers. It explains how to identify and graph points with rational coordinates, including positive and negative fractions and decimals. The tutorial demonstrates graphing ordered pairs on a coordinate plane, emphasizing the importance of correctly ordering x and y values. It also provides tips for estimating positions when exact values are not visible on the scale. The lesson concludes with a brief introduction to the next topic, identifying independent and dependent quantities.

What is the x-coordinate of point A?

• Three-fourths

• One and a half

• Negative three-fourths

• Negative one and a half

How do you find the y-coordinate of point B?

• Go right from the origin

• Go down from the origin

• Go left from the origin

• Go up from the origin

What is a rational number?

• A number that can be written as a fraction

• A positive whole number

• A negative whole number

• A number that cannot be written as a fraction

How do you graph a point with a negative x-coordinate?

• Go right from the origin

• Go left from the origin

• Go up from the origin

• Go down from the origin

Where is point P located if its coordinates are (-0.3, 0.5)?

• Left of the origin and up

• Right of the origin and up

• Left of the origin and down

• Right of the origin and down

What is the y-coordinate of point Q if its coordinates are (0.7, 0.2)?

• 0.5

• 0.3

• 0.2

• 0.7

How do you graph a point with coordinates (1.5, 2)?

• Go left 1.5 units and down 2 units

• Go left 1.5 units and up 2 units

• Go right 1.5 units and down 2 units

• Go right 1.5 units and up 2 units

What is the x-coordinate of point S if its coordinates are (-1, -1.25)?

• -1

• 1.25

• -1.25

• 1

How do you estimate the location of a point with a non-exact number on the scale?

• Use logic and common sense

• Ignore the point

• Guess randomly

• Use only the given numbers

What is the most common error students make when working with x and y coordinates?

• Using positive numbers

• Not having them in the correct order

• Graphing without a ruler

• Using negative numbers