document.write( "Question 1033981: The coordinates of O, A and B are O(0,0) , A(5,0) , B(7,8). Find
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\n" ); document.write( "The triangle OAB is reflected in the line x=0. Write down the coordinates
\n" ); document.write( "of the image of A and of B\r
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Algebra.Com's Answer #648595 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!

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\n" ); document.write( "a) The gradient of AB,
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\n" ); document.write( "b) The equation of AB,
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document.write( "Let Z(x,y) be a random point on AB\r\n" );
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document.write( "\"matrix%281%2C3%2C%0D%0A4%2C%0D%0A%22%22=%22%22%2C%0D%0A%28y-0%29%2F%28x-5%29%0D%0A%29\"\r\n" );
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document.write( "\"matrix%281%2C3%2C%0D%0A4%2F1%2C%0D%0A%22%22=%22%22%2C%0D%0Ay%2F%28x-5%29%0D%0A%29\"\r\n" );
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document.write( "Cross-multiply:\r\n" );
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document.write( "\"matrix%281%2C3%2C%0D%0Ay%2C%0D%0A%22%22=%22%22%2C%0D%0A4%28x-5%29%0D%0A%29\"\r\n" );
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document.write( "\"matrix%281%2C3%2C%0D%0Ay%2C%0D%0A%22%22=%22%22%2C%0D%0A4x-20%0D%0A%29\"\r\n" );
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\n" ); document.write( "c) The area of ▲ OAB,
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document.write( "\"matrix%281%2C5%2Cbase%2C%22%22=%22%22%2COA%2C%22%22=%22%22%2C5%29\"\r\n" );
document.write( "\"matrix%281%2C7%2Cheight%2C%22%22=%22%22%2Cgreen%2Cline%2Cabove%2C%22%22=%22%22%2C8%29\"\r\n" );
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document.write( "Edwin
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