Question

What is the graph of the function rule?

y = |3x| – 1

Answer 1

Can you determine whether the graph faces up or down?

Answer 2

down? because it's negative? I think

Answer 3

d.

Answer 4

It's actually up, since |3x| is positive.

If it was -|3x| it would be down.

Answer 5

A very simple technique would be to plug in a few x values, and see what you get for y.

Answer 6

ohhhh I was looking at the - 1 so I assumed negative

Answer 7

Fair enough. That'll be your y-intercept.

Answer 8

... because when x = 0, \(y = |3x| - 1 = |3(0)| - 1 = -1\)

Answer 9

Okay I'm pretty sure I understand. thank you!

Answer 10

No problem!

Answer 11

What was the answer?