Question

Given a quadratic function, , what happens to the graph when "a" is positive?

Answer 1

when a in the form
y=ax^2+bx+c is positive then the parabola opens up
if it is negative, it opens down

Answer 2

Use the graphing calculator to graph the parent function. f(x) = log(x) Add the translated function. f(x) = log(x - h) + k

Plug in different values of h and k to answer the following questions.

What happens when h is positive? Horizontal shift to the right

What happens when h is negative? Horizontal shift to the left

What happens when k is positive? Vertical shift up

What happens when k is negative? Vertical shift down