Which equation supports the given conjecture?
the difference of two odd numbers is an even number.
a.23 – 19 = 4
b.16 – 10 = 6
c.17 – 12 = 5
d.3 + 5 = 8

Step-by-step explanation:

Even functions have a symmetry about the y-axis. This means that f(x) will appear reflected on the y-axis to get f(-x).

Examples of even functions could be f(x)=x², f(x)=x⁴ , f(x)=x²+1

Odd functions have the origin symmetry .This means equal distance in f(x) and f(-x) from the origin.

Examples of odd functions are; f(x)=x³ and f(x)=x³-x

Attached are visual examples for an even function f(x)=x²+1 and odd function f(x)=x³-x