spidyquack1 spidyquack1
  • 04-04-2021
  • Mathematics
contestada

y = x^2+ 2x + 7
y = 7 + x

Respuesta :

Silem2020
Silem2020 Silem2020
  • 04-04-2021

Answer:

when x=0 y=7

when x=-1 y= 6

Step-by-step explanation:

to find x & y we can make the two x expressions equal to each other

x²+2x+7=7+x (we are going to set it equal to zero to find the roots/the x value)

x²+x=0

x(x+1)=0

x=0 x=-1 (two solutions for x)

now we just plug in these values and find the y values

when x=0 y=7

when x=-1 y= 6

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