Question

Idek how to do this can someone explain

Answer 1

Answer:

2 greater than or equal to-9

Step-by-step explanation:

since the graph has an equation of x²+2x-8

to find the value of x when y=0 find two numbers that if you multiply them together it will give you -8 and if you add them they will give you +2

+4x-2=-8

+4+(-2)=+2

so x²+2x-8=0

can be writteb as (x+4)(x-2)=0

so one time x+4=0 so x=-4

and one time x-2=0 so x=2

so x roots at -4 and 2

to find y when x=0

0²+2(0)-8=-8

so y root at -8

(shown in graph above)

the range is from minimum point to the maximum(down to up) for the y values

there is no maximum point so the graph goes to infinity

the minimum is the middle point between the two x roots so take an average of them

(-4+2)÷2=-1

so when x=-1

(-1)²+2(-1)-8=-9

so the minimum starts from -9 going up to infinity

so the answer is greater or equal to-9

Answer 2

The answer is two. Greater than or equal to -9