Question 1

Which quadratic inequality does NOT belong to the group?

Accepted Answer

4c²-2c > y

Answer

a2-6 < -3

Answer

x²+ 3x - 1 >10

Answer

-(r+ 1) < r²+ 10

Question 2

"The square of twice x is less than -1" is translated in standard form as _________.

Accepted Answer

(2x)²+1 <0

Answer

(2x - 1 ) ²-1 <0

Answer

2(x²-1) + 1 < 0

Answer

2x2-1<0

Question 3

A ball is thrown vertically upward whose initial velocity is 6 m/s. If the distance (y) of the ball in meters from the ground after (t) time is y = 6t - t², which inequality represents the height greater than 16 meters above the ground reached by the ball after t seconds?

Accepted Answer

t²- 6t + 16 < y

Answer

t²+ 6t - 16 > y

Answer

t²- 6t + 16 > y

Answer

t²+ 6t - 16 < y

Question 4

The following ordered pairs satisfy the inequality x²+ 10x $\ge$ y, EXCEPT for ___________

Accepted Answer

(-10, 8)

Answer

(1,1)

Answer

(1, -15)

Answer

(4, 2)

Question 5

How many solutions do quadratic inequalities in two variables have?

Accepted Answer

infinite

Answer

One

Answer

None

Answer

Two

Question 6

Describe the opening of the graph of the leading coefficient or the quadratic term is negative.

Accepted Answer

The graph opens downward.

Answer

The graph opens to the right.

Answer

The graph opens to the left.

Answer

The graph opens upward.

Question 7

What is the vertex in the graph of 2x²+ 3x -4 < y?

Accepted Answer

( $\frac{-3}{4},\ \frac{-41}{8}$ )

Answer

( $\frac{-3}{4},\ \frac{-41}{8}$ )

Answer

( $\frac{-3}{4},\ \frac{-41}{8}$ )

Answer

( $\frac{-3}{4},\ \frac{-41}{8}$ )

Question 8

Which of the following is the graph of 2x²+ 3x - 5 $\le$ y

Accepted Answer

https://uploads.quizalize.com/73a6fabc-b4db-4f51-abab-333d7b3af841/question/ad22cf7bec868c18c35aa2b4807228a341ffa58a.png

Answer

https://uploads.quizalize.com/73a6fabc-b4db-4f51-abab-333d7b3af841/question/f906c90eec923eb5616d30336fb1e1460e58c995.png

Answer

https://uploads.quizalize.com/73a6fabc-b4db-4f51-abab-333d7b3af841/question/ea749d320a9cd31f077c113f178a72b6550788d4.png

Answer

https://uploads.quizalize.com/73a6fabc-b4db-4f51-abab-333d7b3af841/question/ad9cfd9973e064d9d146e92c02a2b174f459d6f3.png

Question 9

The height reached by a shuttle cock that is thrown upward into the air is given by f(x) = -x²+ 25x where x represents the time in seconds after it is fired. In what time intervals is the projectile under 100m?

Accepted Answer

between 5 to 20 seconds

Answer

Answer

between 4 and 25 seconds

Answer

between 2 and 50 seconds

Question 10

If the symbol used in inequality is $\frac{-3}{4},\ \frac{-41}{8}$ , it means that the values or solutions are included and the line to be used is a solid line.

Accepted Answer

boolean://TRUE

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