Understanding Expressions and Variables

Understanding Expressions and Variables

Assessment

Interactive Video

Mathematics

6th - 10th Grade

Hard

Created by

Amelia Wright

FREE Resource

The video explores how the value of mathematical expressions changes as variables within them change. It begins with a simple expression, 100 - x, showing that as x increases, the expression decreases. Next, it examines 5/x + 5, demonstrating that as x decreases while remaining positive, the expression increases. Finally, it analyzes 3y/2y, illustrating that the expression remains constant as y increases, provided y is non-zero.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the value of the expression 100 - x as x increases?

It becomes undefined.

It remains constant.

It decreases.

It increases.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If x is 50, what is the value of the expression 100 - x?

150

0

100

50

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

As x decreases while remaining positive, what happens to the expression 5/x + 5?

It becomes zero.

It decreases.

It increases.

It remains constant.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of 5/x + 5 when x is 1?

5

6

10

11

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of 5/x + 5 when x is 100?

5.05

6

0.05

10

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the expression 3y/2y as y increases?

It becomes undefined.

It increases.

It decreases.

It remains constant.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the simplified form of the expression 3y/2y?

1

0

y

3/2

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