Question 21972
To find a perpendicular line, you need the opposite of the reciprocal.
{{{y=(-3/4)x+2}}}
The perpendicular line's slope would then be 
{{{highlight(4/3)}}}


Your new line's slope intercept form:
{{{y=(4/3)x+b}}}
To find b, you need to use the given ordered pair.
{{{1=(4/3)*(-4)+b}}}
{{{1+(16/3)=b}}}
{{{highlight(19/3=b)}}}
Then put the numbers together

{{{highlight(y=(4/3)x+19/3
Hope this helps!