document.write( "Question 990057: After flying for 10 seconds, he is 2000 meters from her. Then at 14 seconds he is 1800 meters from her.\r
\n" ); document.write( "\n" ); document.write( "Write an equation to model this situation (use m for meters and s for seconds)\r
\n" ); document.write( "\n" ); document.write( "P.s: I have no idea how to form equations from word problems. Can you please teach me, so that in the future i can be able to solve these problems on my own, Thank you. \n" ); document.write( "
Algebra.Com's Answer #610160 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
I have some tips for word problems:
\n" ); document.write( "(1) Every word MAY be important -read carefully
\n" ); document.write( "(2) Right away, state that x = the unknown they
\n" ); document.write( "are looking for. This really helps.
\n" ); document.write( "(3) You might start at the end of what they give you
\n" ); document.write( "and start the solution from there- you don't
\n" ); document.write( "alway work in a straight line.
\n" ); document.write( "(4) Is it a mixture problem? Is it a rate problem?
\n" ); document.write( "Is it a work problem? Put it in a category
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\n" ); document.write( "What you have is a rate problem. It's not worded
\n" ); document.write( "very well because it should say that the plane is
\n" ); document.write( "flying at a constant speed, so I'll have to assume that.
\n" ); document.write( "Sometimes, I put down a formula in words instead of
\n" ); document.write( "symbols like for this problem:
\n" ); document.write( "[ change in distance ] / [ change in time ] = [ average speed ]
\n" ); document.write( "\"+%28+1800+-+2000+%29+%2F+%28+14+-+10+%29+\"
\n" ); document.write( "\"+-200+%2F+4+=+-50+\" meters / sec
\n" ); document.write( "The minus sign doesn't matter in this case, I just need the speed
\n" ); document.write( "-------------------------
\n" ); document.write( "They want to know, after \"+s+\" seconds, how far in meters is
\n" ); document.write( "the plane from her
\n" ); document.write( "If \"+m+\" is distance in meters from her, I can say:
\n" ); document.write( "\"+s+\" = flying time in seconds
\n" ); document.write( "\"+m+\" = meters from her
\n" ); document.write( "\"+2000+-+m+=+50%2A%28+s+-+10+%29+\" answer
\n" ); document.write( "Does this really work?
\n" ); document.write( "After flying for \"+10+\" sec,
\n" ); document.write( "\"+2000+-+m+=+50%2A%28+10+-+10+%29+\"
\n" ); document.write( "\"+2000+-+m+=+50%2A0+\"
\n" ); document.write( "\"+2000+-+m+=+0+\"
\n" ); document.write( "\"+m+=+2000+\" distance from her in meters
\n" ); document.write( "-----------------------
\n" ); document.write( "After flying for \"+14+\" sec,
\n" ); document.write( "\"+2000+-+m+=+50%2A%28+14+-+10+%29+\"
\n" ); document.write( "\"+2000+-+m+=+50%2A4+\"
\n" ); document.write( "\"+2000+-+m+=+200+\"
\n" ); document.write( "\"+m+=+2000+-+200+\"
\n" ); document.write( "\"+m+=+1800+\"
\n" ); document.write( "It works
\n" ); document.write( "It helps if you can plot the equation, or try to
\n" ); document.write( "visualize what the plot would look like in order
\n" ); document.write( "to search for an equation.
\n" ); document.write( "---------------------------
\n" ); document.write( "Here's the plot:
\n" ); document.write( "I'll just clean up the equation:
\n" ); document.write( "\"+2000+-+m+=+50%2A%28+s+-+10+%29+\"
\n" ); document.write( "Add \"+m+\" to both sides
\n" ); document.write( "\"+2000+=+m+%2B+50%2A%28+s+-+10+%29+\"
\n" ); document.write( "Subtract \"+50%2A%28+s+-+10+%29+\" from both sides
\n" ); document.write( "\"+-50%2A%28+s+-+10+%29+%2B+2000+=+m+\"
\n" ); document.write( "\"+m+=+-50s+%2B+500+%2B+2000+\"
\n" ); document.write( "\"+m+=+-50s+%2B+2500+\"
\n" ); document.write( "\"+graph%28+400%2C+400%2C+-10%2C+70%2C+-400%2C+4000%2C+-50x+%2B+2500+%29+\"
\n" ); document.write( "Hope this isn't too confusing-
\n" ); document.write( "keep plugging away -that's what
\n" ); document.write( "I've always had to do!\r
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