Answer: Choice A
Proof:
Replace x with 1 and y with 2. This is because (x,y) = (1,2) so x = 1 and y = 2.
Doing both replacements and simplifying leads to...
2*x - y = 0
2*1 - 2 = 0
2 - 2 = 0
0 = 0
That confirms (x,y) = (1,2) is a point on the line.
It confirms (1,2) is a solution to the equation.
Answer:
$7.20
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
a(2,1) means the item of 2nd row and 1st column.
Column is seen vertically and row is seen horizontally.
Try the Pythagorean theorem,
. Does
? If it does, you have yourself a right triangle. If it doesn't, then it isn't a right triangle.
Answer:
21.5 brainliest pls pls pls
Step-by-step explanation:
