So i would ask this friend to draw a number line and label 6.2 on the number line. Then i would ask her if she knew what the opposite number of 6.2 is.
Yes- The number line will always continue, its indefinite. This means it can go forward or backwards. Make sure that your friend wrote 0. You always need a starting point. Then tell her to draw the tally marks forward the same way she did backwards. Locate the 6.2 and make all of the numbers negative.
I assume you mean, that an angle and two sides are known.
A formula that can be used for irregular triangles is the cosine rule.

'b' and 'c' must be sides that are beside the angle 'A' (angle opposite 'a').
Answer: c
Step-by-step explanation: if you draw second function you'll see they are the same so slop is also the same(0.5)
Answer:
D
Step-by-step explanation:
I just did it on edginuty
a=(4,1) b=(4,3) c=(8,2) d=(8,0) i think i havent done these in a while