How do you know (2,1) is a solution to 4x +y=9
2 answers:
4x+y=9
4(2)+(1)=9
8+1=9
9=9
It is a solution
Answer:
9=9
Step-by-step explanation:
Solution:
x = 2
y = 1
4x+y=9
4(2) + (1)=9 (here 4 and 2 are multiplying with each other, so 4x2= 8)
8+1=9
9=9
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