Linear Equations in Two Unknowns

The equation y = 3x + 5 has _____

二元一次方程y=3x+5

• A unique solution

  有唯一一個解

• Only two solutions

  只有兩個解

• Three solutions

  有三個解

• Infinitely many solutions

  有無限解

Which one of these equations classified to the linear equations in two variables?
以下哪一方程是二元一次方程?

• $x^2-3xy+2y^2=0$

• $2x+3y-4xy=0$

• $3x+5y-6=0$

• $2x+7=9$

What is the y-intercept of this graph?

圖像的y軸截距是什麼?

• 1

• -2

• 0

• 3

What is the y-intercept in the equation y = 5x - 4？

y = 5x - 4 的y 軸截距是多少？

• 5

• -4

• -5

• 4

In the equation y=mx+b, what does the m represent?

在方程 y=mx + b中, m 表示

• slope

  斜率

• y-intercept

  y軸截距

• linear

  線性

• point-slope

  點斜

What is the slope in the equation y=2x + 3?

y = 2x + 3 的斜率是

• 2

• 3

• 5

• Cannot be Determined

  不能確定

What is the y-intercept in the equation y = -2x + 5?

方程 y = -2x + 5 的 y 軸截距?

• -2

• 3

• 5

• Cannot be Determined

  不能確定

Is the ordered pair (2 , 3) is a solution of y= -3x + 9？

序偶 （2, 3) 是否 y = -3x + 9的 解？

• Yes!

  是

• No!

  否

Is the ordered pair (3, 0) is a solution of y = -3x + 9?

判斷序偶（3，0）是否方程 y = -3 x + 9的解？

• Yes!

  是

• No!

  否

Is the ordered pair (1, 3) is a solution of y = -3x + 9？

判斷序偶(1, 3)是否 y = -3x + 9？

• Yes!

  是

• No!

  否