Option 1. The equation that represents the direct variation that exists between a and b is b = –a.
<h3>How to find the direct variation here</h3>
The direct variation is of this form y ∝ x
This gives the equation
y = kx
The constant is k
From our question we have
b ∝ a so b = ka
b = 
a = 
Remember that b = ka

This would cancel out to
1 = -k
or k = -1
Hence the equation would be written as
b = -a
Read more on direct variation here:
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It would be 75% chance of him getting 2 black socks
Answer: No. Equations even if it is paired. So on. It can only have one solution. Although this is only for a system of equations.
A linear can have two. It just depends on what the problem is.
Step-by-step explanation: