document.write( "Question 1060927: The x-intercept of a line has a value of and a y-intercept of 7. Another line has a slope that is twice the slope of the first line and has a y-intercept that is 15 more than the first line’s y-intercept. What is the product of the coordinates in the solution to this system? Write a system of equations for this situation and find its solution.
\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #675791 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Assume this means:
\n" ); document.write( " The x-intercept of a line has a value of 7 and a y-intercept of 7.
\n" ); document.write( "Find the slope (m)
\n" ); document.write( "7m + 7 = 0
\n" ); document.write( "7m = -7
\n" ); document.write( "m = -7/7
\n" ); document.write( "m = -1
\n" ); document.write( "then
\n" ); document.write( "y = -x + 7 is the first equation
\n" ); document.write( ":
\n" ); document.write( " Another line has a slope that is twice the slope of the first line and has a y-intercept that is 15 more than the first line’s y-intercept.
\n" ); document.write( "m = -2
\n" ); document.write( "y intercept: 15 + 7 = 22
\n" ); document.write( "y = -2x + 22 is the 2nd equation
\n" ); document.write( ":
\n" ); document.write( "solve the system by substitution y=y
\n" ); document.write( "-x + 7 = -2x + 22
\n" ); document.write( "+2x - x = 22 - 7
\n" ); document.write( "x = 15
\n" ); document.write( "find y
\n" ); document.write( "y = -15 + 7
\n" ); document.write( "y = -8
\n" ); document.write( "The solution to the system: 15,-8
\n" ); document.write( ":
\n" ); document.write( " What is the product of the coordinates in the solution to this system?
\n" ); document.write( "15 * -8 = -120
\n" ); document.write( ". \n" ); document.write( "
\n" );