Question

How does the sign of "a" affect the direction the graph opens?

Answer 1

The graph is in the attched file.

Answer 2

the sign implies whether the graph is reflected

Answer 3

a negative sign means reflection

Answer 4

is that clear ?

Answer 5

if a is negative, and you are dealing with a function (vertical parabola) the parabola opens downward. If a is positive, the parabola opens upwards.

Answer 6

What are the slopes of the left and right branches of each graph?

Answer 7

y=mx+b is slope-intercept form. m is your slope, so whatever the coefficient of x is.