document.write( "Question 213427This question is from textbook PRECALCULUS
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document.write( ": WHAT TYPE OF FORMULA AM I SUPPOSE TO USE IN ORDER TO FIND THE VALUE OF X 0R Y. THE DIRECTIONS SAY, \"FIND THE VALUE OF X OR Y SO THAT THE LINE THROUGH THE PAIR OF POINTS HAS THE GIVEN SLOPE.\" I'M NOT SURE HOW TO DO THAT. THE GIVEN IS (-2,3) AND (4,y) with the slope of -3. \n" );
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Algebra.Com's Answer #161206 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! WHAT TYPE OF FORMULA AM I SUPPOSE TO USE IN ORDER TO FIND THE VALUE OF X 0R Y. THE DIRECTIONS SAY, \"FIND THE VALUE OF X OR Y SO THAT THE LINE THROUGH THE PAIR OF POINTS HAS THE GIVEN SLOPE.\" I'M NOT SURE HOW TO DO THAT. THE GIVEN IS (-2,3) AND (4,y) with the slope of -3. \n" ); document.write( ": \n" ); document.write( "Use the slope formula to find y: that is \n" ); document.write( "Assign the given values as follows: \n" ); document.write( "x1=-2; y1=3 \n" ); document.write( "x2 =4; y2= y \n" ); document.write( "m = -3 \n" ); document.write( ": \n" ); document.write( "Substitute the given values as follows and find y \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Multiply both sides by 6 \n" ); document.write( "y - 3 = 6(-3) \n" ); document.write( "y = -18 + 3 \n" ); document.write( "y = -15; the pair is: 4,-15 \n" ); document.write( "; \n" ); document.write( "Use the point/slope formula to find the equation \n" ); document.write( "y - y1 = m(x - x1) \n" ); document.write( "Substitute the given values \n" ); document.write( "y - 3 = -3(x -(-2)) \n" ); document.write( "y - 3 = -3(x + 2) \n" ); document.write( "y - 3 = -3x - 6 \n" ); document.write( "y = -3x - 6 + 3 \n" ); document.write( "y = -3x - 3 is the equation \n" ); document.write( ": \n" ); document.write( "Check solution by substituting the x value of 4 \n" ); document.write( "y = -3(4) - 3 \n" ); document.write( "y = = -12 - 3 \n" ); document.write( "y = -15 which is the value we got for y \n" ); document.write( " |