Suppose the equation of the axis of symmetry for a quadratic function is x = 3 and one of the x-intercepts is 8. what is the other x-intercept? suppose the equation of the axis of symmetry for a quadratic function is x = -1 and one of the x-intercepts is 7. what is the other x-intercept?

Suppose the equation of the axis of symmetry for a quadratic function is x = 3 

and one of the x-intercepts is 8.

What is the other x-intercept?

Recognize that the graph of this function will be symmetric with respect to the axis of symmetry, which is x=3.  If one x-intercept is 7, we can quickly calculate that this intercept is 4 units from that axis.  The other x-intercept is 4 units from that axis, but in the other direction; therefore, it is x=3-4 = -1.

The year before the 10s so it was like when caveman were alive

Geometric pattern of 2 i’m guessing. not really sure about what you’re asking but i hope this !