document.write( "Question 947734: The pressure 100 feet beneath the ocean surface is approximately 4 atm where as at a depth of 200 feet the pressure is about 7 atm
\n" ); document.write( "A. Find a linear function that expresses pressure as a function of debt
\n" ); document.write( "B. use the function of part (a) to determine the pressure at a depth of 690 ft. \n" ); document.write( "
Algebra.Com's Answer #578392 by ankor@dixie-net.com(22740)\"\" \"About 
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The pressure 100 feet beneath the ocean surface is approximately 4 atm where as at a depth of 200 feet the pressure is about 7 atm
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\n" ); document.write( "A. Find a linear function that expresses pressure as a function of depth
\n" ); document.write( "Find the slope (m) with x/y pairs:\r
\n" ); document.write( "\n" ); document.write( "x1 = 100 y1 = 4
\n" ); document.write( "x2 = 200 y2 = 7
\n" ); document.write( "m = \"%28%287-4%29%29%2F%28%28200-100%29%29%29\" = \"3%2F100\" = .03 is the slope
\n" ); document.write( "At 0 depth, there will be 1 atm, therefore y = 1 when x=0:
\n" ); document.write( "f(x) = .03x + 1
\n" ); document.write( ":
\n" ); document.write( "B. use the function of part (a) to determine the pressure at a depth of 690 ft.
\n" ); document.write( "f(x) = .03(690) + 1
\n" ); document.write( "f(x) ~ 22 atm at 690 ft
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