What are 3 input and output values for the equation y=-x^2+4?

Here, The function:  y = -x² + 4
Input values would be x coordinates & output values would be y.

When, x = 1, y = (-1)² + 4 = 1 + 4 = 5
x = 2, y = (-2)² + 4 = 4 + 4 = 8
x = 3, y = (-3)² + 4 = 9 + 4 = 13

In short, Your Three input values are: 1, 2, 3
Three Output values are: 5, 8, 13

Hope this helps!

x=3

y= -1

Step-by-step explanation:

with 1 equation you can solve for 1 variable. With 2 equations you can solve for 2 variables. This is solvable.

6x-7y = 25

15x+3y = 42

first simplify to make easier to work with

6x-7y = 25 can not be factored further

15x+3y = 42 can be divided by 3 on both sides

5x+y = 14

then you have

6x-7y = 25

5x+y = 14

solve by substitution:

isolate y in second equation

5x+y = 14 >    y= 14-5x

put y into first equation

6x-7(14-5x) = 25

6x- 98 --35x =25

6x- 98 +35x =25

41x =123

x=3

to get y, substitute x into equation

5x+y = 14

5(3) +y=14

15+y=14

y=-1

hope this helps !