
Substitute x = 3 in any given equations. I will do in y = - x + 1

Therefore the answer is (3,-2)
Answer:
$4.97
Step-by-step explanation:
26.73 - 21.76
= 4.97
Answer: a = 
Step-by-step explanation:
Rewrite the equation as 4a + 9ab=K
Factor out a of 4a + 9b
a (4 + 9b) = K
divide each term by 4 + 9b and simplify
=