Answer:
No
Step-by-step explanation:
Plug (-2,1) into -3x+y=5. This will make it -3(-2)+(1)=5. This is equal to 6+1=5. 7=5. 7 is not equal to 5. Therefore, (-2,1) is not a solution to the equation -3x+y=5.
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Answer:
4
Step-by-step explanation:
If you mean root of x, 24-8=16
square root of 16=4
No. AB is not perpendicular to AC