Question

The function t(h) = 2h – 10 gives the outdoor temperature, in degrees Fahrenheit, h hours after midnight.

What is the meaning of the y-intercept?

A. The temperature was –10°F at midnight.

B. The temperature was 5°F at midnight.

C. The temperature was 0°F at 5 a.m.

D. The temperature was 0°F at 10 a.m.

Answer 1

Well, can you point out the y-intercept in the equation?

Answer 2

-10?

Answer 3

you mean the y int is -10

Answer 4

yes my bad XD my dad walked over and I got sidetracked while typing XD

Answer 5

When an equation is in the form of y=mx+b (which is what you have) m=slope and b=y-intercept, so yes, the y-intercept is -10 c:

Answer 6

look at it this way...the h = hours after midnight.
so if you sub in 0 for h...0 hrs after midnight....you would get the temp at midnight.
t(h) = 2h - 10
y = 2h - 10
y = 2(0) - 10
y = -10

so that is the temp at midnight

Answer 7

Makes sense leaving you with A for the correct answer

Answer 8

yep :)

Answer 9

Yep! :) @texaschic101 explained it better than what I could XD

Answer 10

don't know about that...I probably just confused the crap out of him...lol

Answer 11

haha XD

Answer 12

@texaschic101 has always been my tutor. She's one of the best. Great at helping confused people. Solves the most complicated problems. Thanks @texaschic101 I love to see when you come online

Answer 13

awww......* blushes *....thx

Answer 14

You earned it!

Answer 15

I try.....I am giving you an imaginary hug right now

Answer 16

awww so sweet, such a wonderful person, just because you know your studies, I like how you're not like rude.

Answer 17

rude won't get you anywhere.

Answer 18

I'm not going to take your day, so you have a wonderful rest of your day, hopefully I won't be on here again, I know you have other things.

Answer 19

and just think...before long, you will be helping others with problems such as these :)
Have a good day and stay out of trouble...lol

Answer 20

lol I don't have a problem with trouble, Its easy for me to stay in line