document.write( "Question 178578: how do i know if the equation is y=3/4x+7 how do i know wat the point to start off with \n" ); document.write( "

Algebra.Com's Answer #133555 by Mathtut(3670) $\"\"$ $\"About$

You can put this solution on YOUR website!
you can use any points you like....obviously the lower numbers you pick the easier it will be to figure the unknown variable
\n" ); document.write( ":
\n" ); document.write( "for instance if x=0 then y=7 ....easy to see in your head
\n" ); document.write( ":
\n" ); document.write( "if x=1 then it is a little harder but you can add 7 to 3/4 in your head if you want.
\n" ); document.write( ":
\n" ); document.write( "for x=5---->y=5(3/4)+7=15/4+7=15/4+28/4=43/4=10 3/4
\n" ); document.write( ":
\n" ); document.write( "you should only have to plot 3 or 4 points to get an accurate picture of your graph which is a line in this case.
\n" ); document.write( ":
\n" ); document.write( "later for more complicated equations you may have to plot more points \n" ); document.write( "

\n" );