Question

For each function below, choose the correct description of its graph.
k(x)=5
h(x)=4x-4
f(x)= -2x^2-3
vertical line
horizontal line
line with a negative slope
line with a positive slope
parabola opening down
parabola opening up

Answer 1

Firstly,
Do you know what a horizontal/vertical line would look like
A linear line?
A quadratic function?

Answer 2

\(\color{#0cbb34}{\text{Originally Posted by}}\) @snowflake0531
Firstly,
Do you know what a horizontal/vertical line would look like
A linear line?
A quadratic function?
\(\color{#0cbb34}{\text{End of Quote}}\)
no

Answer 3

You don't have to quote me lol

But, a horizontal line would be when y=____
y, as in _(x)
A vertical line would be when x=___
A parabola would be a quadratic function, so it's like a 'u' shape

Answer 4

okay

Answer 5

So, let's look at the first one
k(x) = 5, as in, y=5
What type of graph would this be

Answer 6

would it be vertical?

Answer 7

Vertical is when x=___
What one would it be when y=__

Answer 8

horizontal

Answer 9

Yep~
So k(x) is a horizontal line

Answer 10

And then you should know about linear graphs.
Linear graphs are a line, a straight line, that never stops
It is usually in the form of y=mx+b

So, what is h(x)

Answer 11

line with positive? slope

Answer 12

Yep

Answer 13

And then we look at quadratic functions

Quadratic functions need at least a x^2
But it's usually in the form of
ax^2 + bx+c

If a is positive, then the function opens up, it it's negative, the function opens down

Answer 14

So, what type of function is f(x)

Answer 15

so since its negative it goes down yes?

Answer 16

yep

Answer 17

okay thank you

Answer 18

Btw it's a parabola
Quadratic functions are parabolas lol, I forgot to add that

Answer 19

and yw~