Question

7y + 4x = 3; (-4, -7)
write the equation in slope intercept form of the line that is perpendicular to the graph of each equation and passes through the given point

Answer 1

we first need to find the slope of the equation. Do you know how to do that ?

Answer 2

nope

Answer 3

in y = mx + b form, the m position is the slope.
7y + 4x = 3 (put it in y = mx + b form)
7y = -4x + 3
y = -4/7x + 3/7
the slope is -4/7
you understand so far ?

Answer 4

yeah sorta..

Answer 5

now we are looking for a perpendicular line, so we need the negative reciprocal of that slope. All that means is we " flip " the slope and change the sign. So the negative reciprocal of -4/7 = 7/4 (you see how I flipped the slope and changed the sign)
So we will be using slope(m) = 7/4 and (-4,-7) x = -4 and y = -7
y = mx + b
now sub
-7 = 7/4(-4) + b
-7 = -28/4 + b
-7 = - 7 + b
-7 + 7 = b
0 = b
so your equation is : y = 7/4x + 0

Answer 6

do you have any questions ?

Answer 7

omg i think so

Answer 8

It will take a little time to learn this, but once you get it down....and you will...it will be easy :)

Answer 9

you were such a big help. i actually get it.
I'm solving one right now

Answer 10

good to hear. Keep practicing and you will learn all this in no time :)

Answer 11

thank you :)