Posted by Faith on Friday, May 29, 2009 at 9:35pm.
What is the slope of a line perpendicular to 2x + 4y = 5?
How would I figure this out? Thank you so much! :)

Algebra (please help!)  Reiny, Friday, May 29, 2009 at 9:39pm
You are probably used to reading the slope from an equation in the form y = mx + b so let's change it to that
2x + 4y = 5
4y = 2x + 5
y = (2/4)x + 5/4
so the slope of the given line is 1/2
recall that slopes of perpendicular lines are "opposite reciprocals" of each other
so the new line has slope +2

Thank you so much! One more question...  Faith, Friday, May 29, 2009 at 9:42pm
This is a different problem...
Find the distance between A (0,1) and B (4,5).
Is this like the slope?

Algebra (please help!)  Reiny, Friday, May 29, 2009 at 9:53pm
the calculations might look similar, but the concept is much different.
you should have seen the formula
distance = √[(change in x's)^2 + (change in y's)^2]
= √[(40)^2 + (51)^2]
= √[16+16]
= √32
notice the same calculation as deltax and deltay ?
Answer This Question
Related Questions
 PreAlgebra  Please let me know if I figured these out correctly. Directions: ...
 algebra  I am looking for a perpendicular line. I'd appreciate ir if you could ...
 math/algebra  find the slope of any line perpendicular to the line through ...
 math,correction  the problem states. find the slope of any line perpendicular ...
 algebra  Find the slope of any line perpendicular to the line through points (0...
 Math  1) What is the slope of a line that is parallel to y = 2? 2) What is the ...
 Math 10  1 more question.... how would I make this equation perpendicular? The ...
 math correction  Find the slope of any line perpendicular to the line through ...
 math  Directions: Find the slope of any line perpendicular to the line through ...
 Algebra  Write the equation of the line satisfiying the givrn geometric ...
More Related Questions