Firefighter (pp. 1 of 2)
Firefighter (pp. 1 of 2)
Firefighter (pp. 1 of 2)
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Getting Hot in Here (<strong>pp</strong>. 2 <strong>of</strong> 2)<br />
Algebra 2<br />
HS Mathematics<br />
Unit: 07 Lesson: 02<br />
<br />
For what values <strong>of</strong> m is the temperature at or above 84F?<br />
This question creates an<br />
inequality:<br />
Temperature 84<br />
Or, 104 8 m 1 84<br />
Which we can solve with the<br />
help <strong>of</strong> a graphing calculator:<br />
Y 1 = 104 8 x 1<br />
Y 2 = 84<br />
ON THE GRAPH WITH THE TABLE ALGEBRAICALLY<br />
First, find the function’s domain.<br />
How can you find the<br />
“intersection” on the graph?<br />
How can you make your table<br />
look like this?<br />
How does this table tell you the<br />
solution to the inequality?<br />
Then solve the inequality by<br />
isolating the radical and<br />
squaring both sides.<br />
How does this graph tell you the<br />
solution to the inequality?<br />
Solve these inequalities using a method <strong>of</strong> your choice.<br />
A) 3x 5 4<br />
B) 7 4x 15<br />
10<br />
C) x5 x5 6<br />
©2010, TESCCC 12/17/10 page 40 <strong>of</strong> 53
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