By looking at the table, we can see that the y values are equal to the x values multiplied by 3.
3x = 3*3 = 9
3x =3*9 = 27
3x=3*13=39
3x= 3*20= 60
So, it is a direct variation and the function is y=3x
2. (a＋b)²＝a²＋2ab＋b²
(5x－2)²＝(5x)²－2×5x×2＋2²
(5x－2)²＝25x²－20x＋4
4. (a＋b)²＝a²＋2ab＋b²
(2x＋5)²＝(2x)²＋2×2x×5＋5²
(2x＋5)²＝4x²＋20x＋25
∵a＝4, b＝20, c＝25
∴a＋b＋c＝4＋20＋25＝49
Hope my answer helped u :)
Answer:
Step-by-step explanation: poop
Answer:
600
Step-by-step explanation:
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