linear

線形の、直線的な

一方の量が同じだけ変わると、他方も同じだけ変わる関係。

やさしい英語で： Describing a relationship where equal changes in one amount produce equal changes in another.

• The graph shows a linear relationship.
• Costs rose at a linear rate.
• We used a linear model to predict demand.

類義語： lineal

よく使う表現： linear relationship, linear model, linear growth

直線状の、直線的な

まっすぐ、またはほぼまっすぐな線の形や方向に沿っている。

やさしい英語で： Straight or nearly straight, following the shape or direction of a line.

• The objects form a linear arrangement.
• The robot followed a linear path.
• Its movement was roughly linear.

類義語： straight, direct

反対語： curved

よく使う表現： linear path, linear arrangement, linear movement

一次の、線形の

未知数同士の積や、未知数の二乗以上を含まない方程式を表す。

やさしい英語で： Describing an equation in which unknown numbers are not multiplied together or raised to powers above one.

• We solved a linear equation.
• This linear polynomial has one variable.
• The students compared linear and quadratic equations.

類義語： first-degree

よく使う表現： linear equation, linear polynomial, linear system

直線的な

多くの直線を使った形やデザインを表す。

やさしい英語で： Describing a shape or design that uses many straight lines.

• She prefers linear designs.
• The artist used strong linear patterns.
• The building combines linear shapes with soft colours.

よく使う表現： linear design, linear pattern, linear shapes

線形の

足し算と数による掛け算の関係を保つ関数を表す。

やさしい英語で： Describing a function that preserves addition and multiplication by a number.

• This is a linear map.
• A matrix can represent a linear transformation.
• The sum of two linear operators is linear.

よく使う表現： linear map, linear transformation, linear operator