Two points give you a line. A third point (often called a check-point) is used to confirm the accuracy of your first two points. If all three line up, you have confirmed you have the correct line.
Answer:
According to Lara value of w=44
So, D=2w+50
Put value of w=44
D=2(44)+50
D=88+50
D=138
Your answer is 138.
Y=3negativeX+18. y=3(-x)+18. I hope I helped.
V= 3.14• 5^2•4
V= 3.14 •25•4
V= 78.5•4
V=314
Sorry I couldn’t give a more detailed explanation but here is the original equation for volume of a cylinder:
V=πr2h
Hope this helps comment below for more questions :)