You are given the system of equations

If you want simply to know whether (1,1) is a solution of this system, then substitute x=1 and y=1 into both equations:

This means that (1,1) is a solution, because both iqualities hold.
Answer:
yes
Step-by-step explanation:
The graph of a proportional relationship is a straight line graph passing through the origin.
Since the graph here does this then there is a proportional relationship between x and y
Answer:
h=2a over b
Step-by-step explanation:
Answer:
OB: 4 sides
Step-by-step explanation:
A parallelogram has 4 sides. It is a flat shape with opposite sides parallel and equal in length. Opposite angles are equal.
In the picture below, angles "a" are the same, and angles "b" are the same.
In the case of a parallelogram where all angles are right angles, is a rectangle.
Answer:
y = -3x
Step-by-step explanation:
To get slope intercept, you divide both y values by both x values like this

In this case this will be 
This will become 
Divide those two to get -3, and now you get your slope intercept.