Answer:
Yes (2,3) is a solution to this system of equations
Step-by-step explanation:
(x,y) (2,3) so x=2 y=3
3=3
3=2+1
Equations are true so it's a solution
Yes
Substitute 2+1=3
Equal means solution
y = -6
x = -8
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Second option
Math
A triangular pyramid has 4 vertices and triangular prisms 6 vertices