Solving Quadratic Word Problems: Consecutive Integers and Rectangles

The video tutorial covers solving word problems using quadratic equations. It begins with an introduction to the concept, followed by a detailed walkthrough of two example problems. The first problem involves finding two consecutive integers whose product is 5 more than three times the larger integer. The second problem involves determining the dimensions of a rectangle given its area and a relationship between its length and width. The video concludes with a brief mention of upcoming content on projectile problems.

What does the term 'product' refer to in mathematics?

• The result of adding two numbers

• The result of subtracting two numbers

• The result of dividing two numbers

• The result of multiplying two numbers

Tags

CCSS.6.EE.B.6

What are consecutive integers?

• Numbers that are multiples of each other

• Numbers that follow one another in order

• Numbers that are prime

• Numbers that are even

Tags

CCSS.6.EE.B.6

If the first integer is x, what is the second consecutive integer?

• x + 1

• x - 1

• x

• x + 2

What is the quadratic equation formed in the first example?

• x^2 + x - 8 = 0

• x^2 - 2x - 8 = 0

• x^2 + 2x - 8 = 0

• x^2 - x - 8 = 0

What are the positive consecutive integers found in the first example?

• 3 and 4

• 6 and 7

• 4 and 5

• 5 and 6

Tags

CCSS.8.EE.C.7B

What is the relationship between the width and length of the rectangle in the second example?

• Width is twice the length

• Width is 5 feet less than the length

• Width is equal to the length

• Width is 5 feet more than the length

Tags

CCSS.8.EE.C.7B

What is the area of the rectangle given in the second example?

• 48 square feet

• 84 square feet

• 94 square feet

• 64 square feet

What is the quadratic equation formed to find the dimensions of the rectangle?

• L^2 - 5L + 84 = 0

• L^2 + 5L - 84 = 0

• L^2 + 5L + 84 = 0

• L^2 - 5L - 84 = 0

Tags

CCSS.4.MD.A.3

What are the dimensions of the rectangle?

• Length = 14, Width = 9

• Length = 12, Width = 7

• Length = 10, Width = 5

• Length = 16, Width = 11

Tags

CCSS.8.EE.A.2

Why can't the length of the rectangle be -7?

• Because the width would be negative

• Because the area would be negative

• Because length cannot be negative

• Because the width would be zero

Tags

CCSS.8.EE.A.2