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Published byAmie Greene Modified over 6 years ago
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AIM: How do we graph functions and find their intercepts?
Do Now: How would you “describe” this function? x + y = 7 HW #2 – page 9 #1-4, 5-9 (odd only)
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In calculus, its important that you can look at things from different perspectives .
With functions there are 3 views: Draw the Construct a Put into graph table of values y = mx +b form VISUALLY NUMERICALLY ANALYTICALLY
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TRY DOING EACH “VIEW” WITH 3x + y = 7
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What would happen if we try and graph y = 1 X (39 – 10x² + x⁴)? 30
Construct a table of values and draw the graph. Find the y – value when x = -3,-1,0,1,3
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Finding X and Y Intercepts
How many and where are the x and y intercepts in each graph?
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It’s easy if we have a graph, what’s happens if we don’t?
Finding the x-intercept – let y = 0 and solve for x (usually involves factoring) Finding the y – intercept – let x = 0 and solve for y
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Example 1 Find the x and y intercepts for y = x³ - 4x
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Find the x and y intercepts:
2) y = √9 – x² 3) y = 2x² + x 4) y = 2x - √x² + 1
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