Question

If the graph of an equation is symmetric with respect to the y-axis and 6 is an x-intercept of this graph, name another x-intercept

Answer 1

Symmetry at the y-axis means that the distance of one point from the y-axis in the positive direction is equal to the distance of a point from the y-axis in the negative direction.
Distance of x-intercept from y-axis = 6
Distance of other intercept = -6.
Value of other intercept: (-6 , 0)