If you multiply the slopes of two perpendicular lines, what is the result?

2) if line a contains the points (3, -4) and (6, -2), and line b contains the points (-1, 5) and (1, 2), prove that the lines are perpendicular by multiplying their slopes.

3) line a and line b are perpendicular. line a contains the points (4,2) and (-1, 3). if one of the points on line b is (3, 7), find another point on line b.
(i got number 2 however dont know how to do 3) !

Find the gradient/slope of Line A:

(3-2)÷(-1-4)

=-0.2

Therefore, the gradient/slope of line B is 5

Using the equation y-y1=m(x-x1) we can find the equation of line B

y-7=5(x-3)

y= 5x-8

Sub in a random value for y (eg. y=2)

2=5x-8

5x=10

X=2

so (2,2)

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation:

25% is the answer