Answer:
4x^2-5y
Step-by-step explanation:
4x^2-5y
D x= -9
Y=9
Because 4(-9)+45=9
I just put in each one and d got it right.
Answer:
y = 2; distance is 4 units
Step-by-step explanation:
Line y = 2
Because the y- coordinate is the same, only horizontal movement from -1 to -5..
Which is 4 units
Answer:

Step-by-step explanation:
Lines form 180 degrees on either side. The negative sign simply implies direction (clockwise instead of counter-clockwise), which is negligible as 180 is exactly half of 360 so you'd form the same line.
Answer:
a. mass is to kilogram.