if a parabola has its vertex at (3,-5) and one of its x-intercepts at x=8, what is the other x-intercept?
+2234
if a parabola has its vertex at (3,-5) and one of its x-intercepts at x=8, what is the other x-intercept?
Assuming the parabola is symmetrical
The x-coord of the vertex would be halfway between the x-intercepts
From vertex x-coord 3 to x-coord 8 is 5 units in the positive direction
For the other x-intercept, go the same distance
from the vertex x-coord in the other direction
From 3 go 5 units in the negative direction
The other x-intercept is at x = – 2
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