2007-10-08 09:59:28 · 8 answers · asked by lynne 2 in Science & Mathematics ➔ Mathematics
find a linbe that will cros that like in a 90 degree angle !
negative reciprocal of the original like so i think the slope would be -4/3
2007-10-08 10:03:12 · answer #1 · answered by rocha_diego@sbcglobal.net 2 · 1⤊ 0⤋
A line perpendicular to the given line will have the opposite reciprocal slope. So, find the slope of the given line and take the opposite reciprocal
In this case, the slope of y=3/4x+5 is 3/4
So, the slope of the perpendicular is -4/3.
2007-10-08 10:09:31 · answer #2 · answered by JLynes 5 · 0⤊ 0⤋
A perpendicular line is a straight line at right angles to another line. This means that the slope of the line you are looking for will make a 90 degree angle to the line 3/4x+5.
To find this, you need to first find its slope by finding the negative reciprocal of 3/4x which is -4/3x. Next, depending on which point on 3/4x+5 your line intersects, you would have to find the equation of the line by using the y=mx+b form, or point slope form.
2007-10-08 10:04:19 · answer #3 · answered by DUDE 2 · 0⤊ 0⤋
It means the same thing it did in high school. The slopes of perpendicular lines are negative reciprocals of each other.
The slope of the given line is m = 3/4.
The slope of the line perpendicular to the given line is
m' = -1/m = -4/3
2007-10-08 10:03:21 · answer #4 · answered by Northstar 7 · 1⤊ 0⤋
y = 3/4 x + 5
slope in that line is 3/4
parallel slope is the same answer 3/4
perpendicular slope is the negative reciprical of the answer..
so its -4/3 for the slope..
answer is -4/3
when the original slope times with the Perpendicular slope..the answer should be -1
so check
(3/4) x (-4/3) = -1
2007-10-08 10:04:36 · answer #5 · answered by toocool 1 · 0⤊ 0⤋
well you give the equation
y = 3/4x + 5
this is called y-intercept form
y = mx + b
m = slope
b = constant or crosses the y-axis
to find a perpendicular slope to the given function or line you take to opposite reciprocal of the slope so (3/4) is your given slope your perpendicular slope is(-4/3)
if the ask for the equation it you be
y = -4/3x + b
and would have to find where is crosses the y-axis
2007-10-08 10:11:23 · answer #6 · answered by Richard B 3 · 0⤊ 0⤋
diffferentiate it, find the gradient. dy/dx=3/4 the invert it and multiply by -1 so its -4/3
2007-10-08 10:11:13 · answer #7 · answered by Anonymous · 0⤊ 0⤋
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2016-12-14 11:24:03 · answer #8 · answered by mcintire 4 · 0⤊ 0⤋