# Math Word of the Day - Week of December 27

Dec 27, 2020 | Queen Creek

Math Word of the Day comes from the Math Dictionary written by Mathnasium.

### Dimension

Sunday, December 27

A measure of space, especially width, height, or length.

### Direct Proof

Monday, December 28

A conclusion proved through deductive reasoning.

### Direct Variation

Tuesday, December 29

Two variable quantities vary directly if the ratio of one to the other remains constant. A direct variation equation usually takes the form of y = kx, but it can also be written in the form of k = y/x or x = y/k. The graph of a direct variation equation is linear and passes through the origin.

### Direction

Wednesday, December 30

The angular position of two points with respect to each other.

### Direction (of change)

Thursday, December 31

To the right usually denotes a positive change. To the left usually denotes a negative change.

### Discipline

Friday, January 1

Instruction, teaching, learning, knowledge.

### Discount

Saturday, January 2

The amount deducted or subtracted from a cost or price.