Warm-Up

If a rectangle has vertices (-3, 2), (5, 2), (-3, -2), (5, -2), what is the area of that rectangle?

What is the rectangle’s perimeter?

Finding Ordered Pairs to Graph from an Equation

If you are given the equation, y = 3x , what are 3 different ordered pairs that satisfy the equation?

If you are given the equation, y = 5x, what are 3 different ordered pairs that satisfy the equation?

Finding an Equation from a Graph

Finding an Equation from a Graph

What is a vertex?

Vertices is the plural form of vertex.

What is a reflection over an axis?

What is Perimeter?

• Perimeter is the space around a shape. If you were to think about a yard that is fenced in, the fence shows the perimeter of that yard. How far do you walk around the yard in total? That is perimeter.

What is Area?

• Area is the total amount of space contained in one shape. Back to the yard, if you were to walk up and down the entire yard, that would be the area of the yard. Or you can think if you were to cut the grass of the yard, the lawnmower covers the entire area of the yard.

Homework

• Draw a square and show that it can be 2 triangles.

Warm-Up

Your coach tells you to run laps around the rectangular soccer field. You end up running a total of 120 yards. The soccer field is 20 yards long. What is the width of the field? If your coach wanted you to cut the grass of the field, how many yards would you cut?

Get out your homework.

Your coach tells you to run laps around the rectangular soccer field. You end up running a total of 120 yards. The soccer field is 20 yards long. What is the width of the field?

HOMEWORK

• WRITE 3 COORDINATES OF A QUADRILATERAL SO WE CAN FIND THE MISSING VERTEX TOMORROW

• What is a quadrilateral?• What is a vertex?

Warm-Up

• Find the missing vertex of the shape that has coordinates (-5, 2), (0, 2), (-5, -3).

• What is the perimeter of the shape?• What is the area of the shape?

Area of Triangles

• One triangle makes up half of a square.• What is the area of a square?• What is the area of a triangle?

Review

• Graph values from an equation and make a table.

• Graph values from a table and make an equation.

• Make a table and an equation from a graph.• Find the perimeter and area of a rectangle.• Find the area of a triangle.

Practice

• y = 7x• kX Y

3 9

5 15

7 21

• Fix the desks, pick up paper.• First two people to finish packing up to wash

the boards.

Practice

• Graph the points (-1, 3), (-1, 6). What is the missing vertex of the triangle? What is the area?

• Graph the points (-4, 4), (-4, 0), (0, 0). What is the missing vertex of the square? What is the perimeter? What is the area?