This chart represents a proportional relationship. The rate of change will be 4.
<h3>What is the constant of proportionality?</h3>
Firstly, there is a proportional relationship.
Two values x and y are said to be in a proportional relationship if x=ky, where x and y are variables and k is a constant.
The constant k is called the constant of proportionality.
Given;
x y
1 4
2 8
3 12
4 16
Here, x = ky
put the first value
k = 1/4
This chart represents a proportional relationship.
So the rate of change will be

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I can help if you put the number sentences in
Answer: f(x) is just a fancy way of writing y in an equation
Step-by-step explanation:
Example: f(x)= 2x+4 is the same as y= 2x+4
Answer:

Step-by-step explanation:
Given

--- right angle
Required
Which of the options is true
In a triangle, we have:
--- angles in a triangle
Substitute 

Collect like terms


This implies that E and G are complementary angles.
For complementary angles, E and G;
and 
<em>Hence, (4) is true</em>