Answer:

Step-by-step explanation:
The equation of the line you will find should be in the form y =mx+c , where m is the gradient and c is the y intercept.
The gradient of a line that is perpendicular to a line [of a known gradient] is the negative reciprocal of the gradient of the first. i.e. if a is the known gradient and the perpendicular gradient is b, ab = -1. Therefore the -3b=-1 and b= 1/3
you can now write y = mx +c as y = 1/3x +c
As you have been given a coordinate, you can input these values into y= 1/3x + c
-12 = 1/3(6) +c
-12 - 2 = c
c = -14
hence the equation of the line is y= 1/3x -14
Answer:
y = 5z - x
Step-by-step explanation:
Given
z =
( multiply both sides by 5 to clear the fraction )
5z = x + y ( subtract x from both sides )
5z - x = y
Answer:
11.1% change
Step-by-step explanation:
first find their differences
80-72 =8
secondly
set up a fraction to find the percentage change
because percentage deals with fractions
8/72 *100 ( because percentage is over 100)
lastly
you simply
0.111111*100
=11.11%. ans
The answer is called a linear equation :))
if four points are collinear, that are also coplanar: This is true
If points lie in the same line. they must lie in the same plane