SOLUTION: help on this one please! write the slope-intercept form of the equatin of the line through (-1,2) that is perpendicular to the line x+3y=4 thank you for your help!

Algebra ->  Rational-functions -> SOLUTION: help on this one please! write the slope-intercept form of the equatin of the line through (-1,2) that is perpendicular to the line x+3y=4 thank you for your help!      Log On


   

Question 63212: help on this one please!
write the slope-intercept form of the equatin of the line through (-1,2) that is perpendicular to the line x+3y=4 thank you for your help!
Answer by Cintchr(481) About Me  (Show Source):
You can put this solution on YOUR website!
+x%2B3y=4+
get this in slope-intercept form
+3y+=-1x+%2B+4+
+y+=+-1x%2F3+%2B+4%2F3+

If the new line is perpendicular to this one ... its slope is the opposite reciprocal of -1/3 .... +3
+y+=+3x+%2B+b+
plug in (-1,2)
+2+=+3%28-1%29+%2B+b+
solve for b
+2+=+-3+%2B+b+
+5+=+b+

+y+=+3x+%2B+5+