Yes, (x - 3) is a factor of the given polynomial.
If (x - 3) was a factor of the polynomial, then 3 would be one of the zeros of the function. That means if you input 3 into the function, you will get an output of zero.
In this case, inputting 3 does produce 0. Therefore, it is a factor.
        
                    
             
        
        
        
Answer:
10x + 4y is the correct answer
 
        
             
        
        
        
Tables are created by substitute a set of input values into the function to create outputs. The required table is as shown below
<em>x | y</em>
<em>0   -3 </em>
<em>1   -2.5</em>
<em>2   -2 </em>
<h3>Tables and values</h3>
Tables are created by substitute a set of input values into the function to create outputs
Using x = 0, 1 and 2 as the input values
Given the function
y = 1/2x - 3
If x = 0
y = 1/2(0) - 3
y = -3
If x = 1
y = 1/2(1) - 3
y = -2.5
If x = 2
y = 1/2(2) - 3
y = -2
Hence the required table is as shown below
x | y
0   -3 
1   -2.5
2   -2 
Learn more on tables and values here: brainly.com/question/12151322
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Does this help? If it doesn't i can try to explain more if you want.