3.1 导言:两种变量的线性等同和不平等
章节大纲
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In the previous chapter, we discussed linear equations and inequalities where an expression was compared to a fixed quantity. However, sometimes when we change one quantity that causes a change in another quantity. We need two variables in our equations and inequalities to model situations like this.
::在前一章,我们讨论了线性方程和不平等问题,其中将表达与固定数量作比较。然而,有时当我们改变一个数量导致另一个数量的变化时,我们需要两个变量来模拟这种情况。By the end of this chapter, you should be able to:
::在本章末尾,你应当能够:-
Plot a point.
::画一个点。 -
Determine whether a set of data is linear data.
::确定一组数据是否为线性数据。 -
Find the slope of a line.
::找到一条线的斜坡。 -
Find the equation of a line.
::找到一条线的方程。 -
Graph a line.
::绘制一条线。 -
Determine whether lines are parallel or perpendicular.
::确定线条是平行线还是垂直线条。 -
Graph linear inequalities.
::线性不平等图。 -
Graph absolute value functions.
::图形绝对值函数。
Features
::特征特征Section 2: Latitude and Longitude
::第2节:纬度和经度Section 3: Cruise Control
::第3节:巡航控制Section 4: Icy Climb
::第4节:冰爬升Section 11: A Road Map to Healing
::第11节:实现治疗的路线图Connections
::连接连接Scatterplots and the Line of Best Fit
::散列和最佳适应线Where Our Water Comes From
::我们的水源从何而来 -
Plot a point.