Answer:
C
Step-by-step explanation:
In order to be a function, all of the graphs need to pass the vertical line test
Vertical line test- Only one point per vertical line, if there are more than one, it is not a function
C is the only one that has more than one point at a vertical line
Answer:
4th option
Step-by-step explanation:
The term that combines with 3x²y , must have variables x²y
The only other term with x²y is 8x²y
Answer:
c. subtract, then divide
Step-by-step explanation:
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2/x + 1/7 = 4/x
2/x + 4/x = -1/7 move the terms
Transform the expression
-2/x =-1/7 change the signs
2/x = 1/7 cross multiply
Final answer X= 14
Substitute into second equation:
x+3=2x-3
put variables on one side:
3x=6
x=2
Substitute to find y:
y=2+3
y=5
So (x, y) = (2, 5)