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Graphing Lines 2
"Using the Intercepts Method"
There are 2 Intercepts for any linear equation:
• x-intercept:
• y-intercept:
where line crosses the xaxis
where line crosses the yaxis
*to find x-intercept from any eq'n, let y = 0, and solve for x.
*to find y-intercept from any eq'n, let x = 0, and solve for y.
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• Graph 3x 2y = 6
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• Graph y = 2x 2
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• Graph 3x + 4y 12 = 0
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Graphing Lines 3"Using Slope‐Intercept Form"
y = mx + b the slopeintercept form of a linear eq'n.
* To graph using this method, we MUST convert equations to slope-intercept form
• Graph x 2y = 2 using slopeint. method
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• Graph 3x-y+4=0 using slopeint. method
1 2 3 4 5 66 5 4 3 2 1
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• Graph y = -1/4 x + 5 using slopeintercept method
1 2 3 4 5 66 5 4 3 2 1
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1 2 3 4 5 66 5 4 3 2 1
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• Graph and find m and b of y = 0
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Exercise # 11 & 12# 1-12