Question 1

Which of the following are quadratic equations?

Accepted Answer

x^2-81=0

Answer

5r-4=3r

Answer

1/2 h+4=0

Answer

12-3s=4-2s

Question 2

Which of the following is the best definition of quadratic equation?

Accepted Answer

An equation in one variable is a 2nd-degree equation (the highest value of the exponent of the variable is 2) that can be written in standard form ax^2+bx+c=0.

Answer

An equation in one variable is a first-degree equation, that is the highest value of the exponent of the variable is 1.

Question 3

Which of the following is a graph of a quadratic equation?

Accepted Answer

https://uploads.quizalize.com/a8044cc4-cdeb-433e-b250-7e4c27c11c0c/question/10f8a3ae40bcf988578959d54bc3535004a9b82f.png

Answer

https://uploads.quizalize.com/a8044cc4-cdeb-433e-b250-7e4c27c11c0c/question/746205680e0c70d8812c046f20b2aa4a954e351e.png

Answer

https://uploads.quizalize.com/a8044cc4-cdeb-433e-b250-7e4c27c11c0c/question/3227c98cc6798a42fd355d25ff526b066ff0ae74.png

Answer

https://uploads.quizalize.com/a8044cc4-cdeb-433e-b250-7e4c27c11c0c/question/c0f27fc8ed319a0dd3a4261e36fea5f008c429c7.png

Question 4

The length of a rectangular lot is 8 m longer than its width and the area is 105 m ². Find the equation that represents the given situation.

Accepted Answer

x^2+8x-105=0

Answer

2x^2- 25x + 50 = 0

Answer

x^2-8x+105=0

Answer

x^2- 105 = 0

Question 5

It  is a mathematical sentence stating that the values of two mathematical expressions are equal.

Accepted Answer

EQUATION

Question 6

A ___________ equation in one variable is a first-degree equation, that is the highest value of the exponent of the variable is 1.

Accepted Answer

L,I,N,E,A,R

Question 7

True or False                                                                                                                                                            The equation  (x+2)(2x-3)=0  is an example of a quadratic equation.

Accepted Answer

true

Answer

false

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