Question

Solve the system below.
y = x2
y = –2x + 15

Answer 1

Explanation:

`x^(2) = -2x^(2) +15`

add
`2x^(2)` to both sides

`3x^(2) = 15`

divide each side by 3

`x^(2) =5`

square root each side
`√(x^2) =√(5)`

`x= 2.23606794` or rounded to the nearest hundredth
`x=2.24` or x = ±
`√(5)`

Answer 2

since,

y = 2x and y = –2x + 15

then,

2x = –2x + 15

or, 4x = 15

or, x = 15/4

or, x = 3.75

Also,

y= 2x

= 2*3.75

= 7.5

Hope it helped

All the best!!