So for something to be perpendicular the gradient must be the negative reciprocal of your original line so your original gradient is 2 so your new gradient will be -1/2. Then you have y = -1/2 x + c . Now you substitute this into the point (4,-1) to get -1 = -1/2 x 4 + c and -1/2 x 4 = -2 so you have -1 = -2 + c so c = 1 so then you put the equation together to get y = -1/2 x + 1
Hope this helps :))
A Because whenever you’re adding integers that have the same thing you keep the same signs in at the absolute value of each number
Answer:
Step-by-step explanation:
https://www.sunnyvaleisd.com/cms/lib3/TX01001155/Centricity/Domain/179/VolumeRectangularPrismPracticeKey.pdf link
Answer:
Step-by-step explanation:
Cross multiplication can be used but not in the beginning. First x should be isolated.
Now subtract 
from both sides
In this stage, cross multiplication can be used.
