Question

*MEDAL*

Which equation best represents the line graph?

y = -x + 4
y = x + 4
y = x - 4
y = -x - 4

Answer 1

@austinL
Can you help you please? :o

Answer 2

Well, we have slope-intercept form.

\(y=mx+b\)
Where b is your y-intercept.

Where does this graph cross the y axis?

Answer 3

@NobodySpecial hello?

Answer 4

Oh, sorry. I had to go grab lunch. my bad.

Answer 5

Hmm...

Answer 6

y = 4

Answer 7

Yep, so that removes two answers.
You are left with,

y = -x + 4
y = x + 4

Is the slope positive or negative?

Answer 8

y = -x + 4?
Here's why i think that. On the x-axis, the line is going through -x (-4) and on the y-axis the line is going through positive 4...right? :o

Answer 9

Nope, -x means that it is a negative slope.

Answer 10

so y = x + 4 then?

Answer 11

Indeed!

Answer 12

Thanks, Austin! :D

Answer 13

No problem!