Question

the intercept (factored) form a parabola.

y= a(x+r)(x+s)

1. how does the value of 'a' affect the graph of a parabola


2. how does the values of 'r' and 's' affect the graph of a parabola

Answer 1

The a value affects the graph by vertically stretching or compressing the graph.
The r and s values affect the zeros, or x intercepts of the parabola, and therefore the vertex.
Hope this helps!