5. Graphing Linear Equations in Slope-Intercept Form
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What information does a slope-intercept form equation give you?
x-intercept: 0
Graph:
y= -1x + 0 The slope is -1 and the y-intercept is 0.
A slope of -1 means that for every 1 unit we move in the positive horizontal direction, we move 1 unit in the negative vertical direction. m=rise/run=-1/1 To graph the equation, plot the y-intercept and then use the slope to find another point on the line.
Now that we have graphed the given function, we can use our graph to identify the x-intercept. This is the point at which the line intercepts the x-axis.
The line crosses the axis at (0,0), so the x-intercept is 0.