document.write( "Question 1152835: 1. y - 7 = 3(x + 2)
\n" );
document.write( "y+2=3(x-7)
\n" );
document.write( "y-(-2)=3(x-(7))
\n" );
document.write( "y-y1=m(x-x1)
\n" );
document.write( "y1=-2
\n" );
document.write( "x1=7
\n" );
document.write( "slope=m=3\r
\n" );
document.write( "\n" );
document.write( "(x1,y1)
\n" );
document.write( "(7,-2) is my answer, but I need to see what this looks like in a graph.\r
\n" );
document.write( "\n" );
document.write( "2. In the year 2001, there were 20 students per every computer. In 2008, there were 4 students per computer. Write two ordered pairs to represent the ratio of student to computer. (Let x equal the number of years since (x,y)=(year, ratio)
\n" );
document.write( "(2001,20) and (2008,4.5) is what I have - just need to check if this is correct.\r
\n" );
document.write( "\n" );
document.write( "3. Find the slope-intercept form of the equation that goes through these two points.\r
\n" );
document.write( "\n" );
document.write( "y=mx+b
\n" );
document.write( "m=(y2-y1)/(x2-x1) = m=(4.5-20)/(2008-2001)=-2.214
\n" );
document.write( "20=-2.214*2001+b = b=4450.786
\n" );
document.write( "y=-2.214x+4450.786 is what I have - just need to check if this is correct.\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "4. Find the point-slope form of the equation that goes through these two points.\r
\n" );
document.write( "\n" );
document.write( "(y-y1)=m(x-x1)
\n" );
document.write( "(y-20)=-2.214(x-2001)
\n" );
document.write( "is what I have - just need to check if this is correct.\r
\n" );
document.write( "\n" );
document.write( "Thank you \n" );
document.write( "
Algebra.Com's Answer #774931 by josgarithmetic(39617)![]() ![]() ![]() You can put this solution on YOUR website! --------------------------------- \n" ); document.write( "1. y - 7 = 3(x + 2) \n" ); document.write( "---------------------------------\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Only doing question #1 here.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Graph will include (-2,7) and (0,13).\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " |