![\"\"](\"/images/stars/stars-13.gif\")
You can put this solution on YOUR website!
write an equation of a vertical line through (4,3).\r
\n" ); document.write( "\n" ); document.write( "x=4\r
\n" ); document.write( "\n" ); document.write( "write an equation of the line parallel to the line 8x - 2y = 7 passing through (2,-1).\r
\n" ); document.write( "\n" ); document.write( "8 x -2 y = 7
\n" ); document.write( "Find the slope of this line
\n" ); document.write( "make y the subject
\n" ); document.write( "-2 y = -8 x + 7
\n" ); document.write( "Divide by -2
\n" ); document.write( " y = 4 x -3 1/2
\n" ); document.write( "Compare this equation with y=mx+b
\n" ); document.write( "slope m = 4
\n" ); document.write( "The slope of a line parallel to the above line will be the same
\n" ); document.write( "The slope of the required line will be 4
\n" ); document.write( "m= 4 ,point ( 2 , -1 )
\n" ); document.write( "Find b by plugging the values of m & the point in
\n" ); document.write( "y=mx+b
\n" ); document.write( "-1 = 8 + b
\n" ); document.write( "b= 9
\n" ); document.write( "m= 4
\n" ); document.write( "Plug value of the slope and b in y = mx +b
\n" ); document.write( "The required equation isy = 4 x + 9 \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "find all values of x for which (x,6) is on the graph of f (x) = x2 + 3x -4
\n" ); document.write( "6=x^2+3x-5
\n" ); document.write( "x^2+3x-10=0
\n" ); document.write( "(x+5)(x-2)=0
\n" ); document.write( "x=-5 & 2 \n" ); document.write( "