dilysattram
dilysattram dilysattram
  • 14-04-2020
  • Mathematics
contestada

Select all of the ordered pairs that make the
inequality y> x2 + 3x – 4 true.
(0,0)
(2,1)
(-2,-1)
(-5, -1)

Respuesta :

Auspicious
Auspicious Auspicious
  • 14-04-2020

y > x² + 3x - 4

We can just simply test all of the values. The value of the y-coordinate has to be greater than the expression on the left after plugging in x.

A. (0, 0) YES

y > x² + 3x - 4

0 > 0 + 0 - 4

0 > -4

TRUE

B. (2, 1) NO

y > x² + 3x - 4

1 > (2)² + 3(2) - 4

1 > 4 + 6 - 4

1 > 6

NOT TRUE

C. (-2, -1) YES

y > x² + 3x - 4

-1 > (-2)² + 3(-2) - 4

-1 > 4 - 6 - 4

-1 > -6

TRUE

D. (-5, -1) NO

y > x² + 3x - 4

-1 > (-5)² + 3(-5) - 4

-1 > 25 - 15 - 4

-1 > 6

NOT TRUE

Answer Link
hanna1686 hanna1686
  • 19-11-2021

Answer:

A and C

Step-by-step explanation:

right on edge

Answer Link

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