Question

Which is the equation of the given line in point-slope form?

A. y + 1 = 6/7 (x + 4)
B. y + 1 = 6/11 (x + 4)
C. y + 4 =11/6 (x + 1)
D. y - 1 = 6/11 (x - 4)

Answer 1

@jigglypuff314

Answer 2

well... idk the given line ;)
point slope form: y - y1 = m(x - x1)
when m = slope and given the point (x1, y1)

Answer 3

Hold on, I'm pasting the line :P

Answer 4

http://static.k12.com/calms_media/media/1312500_1313000/1312641/1/a94dac9fc928f74786ee171aa73293fef63d604c/HS_A1G2_S1_07_10_ART1.jpg

Answer 5

first find slope:
\[slope = \frac{ rise }{ run } = \frac{ y _{2}-y _{1} }{ x _{2}-x _{1} }\]when given points (x1, y1) and (x2, y2)

Answer 6

I know what slope equals :P

Answer 7

Is the slope of the line -2?

Answer 8

2 - (-1) = 2 + 1 = 3
1.5 - (-4) = 1.5 + 4 = 5.5
so 3/5.5 or 6/11

Answer 9

Oh.. I must have done it wrong.. sorry :(

Answer 10

it's fine :P everyone makes mistakes :)

Answer 11

Thats true :P So now its either B or D, right?

Answer 12

yep :)
try plugging in point (-4, -1) into y - y1 = (6/11)(x - x1)

Answer 13

y - y1 = (6/11)(x - x1)
y -(-1) = (6/11)(x-(-4))
y + 1 = (6/11)(x + 4)

Answer 14

Ok, now I feel stupid and dumb.. >.>

Answer 15

lol ;) good job! :D

Answer 16

Ok, thanks :) I have 4 left, you think you could help with the rest? :P

Answer 17

yea sure :)

Answer 18

Thanks! :)

Which is an equation of the given line in standard form?

A. –8x + 9y = 23
B. –8x + 9y = –23
C. –8x + 7y = 25
D. –9x + 8y = –23

http://static.k12.com/calms_media/media/1331000_1331500/1331297/1/c5c8e45fd70b35572ab9141472538d3ecb31705d/HS_AL1G2_S1_07_10_ART2.jpg

Answer 19

I not like standard form >:(
first find slope
the plug into what ever equation format you like the best
then simplify it into standard form...

Answer 20

yep :)

Answer 21

Awesome! At least I got one right :P

Answer 22

Which is the equation of the given line?
A. x = –3
B. x = 3
C. y = –3
D. y = –3x

http://static.k12.com/calms_media/media/1312500_1313000/1312643/1/99a45d74ac85e7c581b85f02ff88f26b08902e7d/HS_A1G2_S1_07_10_ART3.jpg

Answer 23

horizontal line's equation is y = (something) with no x involved

Answer 24

So, find the slope of the line first?

Answer 25

you can see that it's a horizontal line
therefore slope = 0

(if it was a vertical line then slope = undefined)

Answer 26

no x involved, because having an x in there would give it slope

Answer 27

yep :)

Answer 28

Thanks :) Let me write the next one..

Answer 29

Which is the equation of the given line in slope-intercept form?

A. y =3x + 2
B. y +3x - 2
C. y = -3x + 2
D. y = -1/3x + 2

I can't paste the graph but the line goes like this: