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What does y = 1x - 3 and y=-x-21 - 3 have in common?

Answer :

Answer:  Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

(

21

2

,

27

2

)

Equation Form:

x

=

21

2

,

y

=

27

2

Step-by-step explanation: