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Find the equation of the quadratic function that doesn’t cross the x-axis and passes through the point (1, 7)

A) y=x² +5

B) y = 2x² +5


C) y=x²-5

D) y = 2x² -5​

Sagot :

Answer:

LETTER B (y = 2x²+5)

Step-by-step explanation:

Substitute (1,7) to the equations

A) y = x²+5

7 = (1)²+5

7 = 1+5

7 ≠ 5

B) y = 2x²+5

7 = 2(1)²+5

7 = 2(1)+5

7 = 2+5

7 = 7

C) y = x²-5

7 = (1)²-5

7 = 1-5

7 ≠ -4

D) y = 2x²-5

7 = 2(1)²-5

7 = 2(1)-5

7 = 2-5

7 ≠ -3

The only correct equation is Option B

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