Question

Write an equation in point-slope form for the line through the given point with the given slope. (8, 3); m = 6

Answer 1

what's the point slope form?
\[y-y_1=m(x-x_1)?\]

Answer 2

lol

Answer 3

Yes it is apparently:
so you have your point (8;3), so x1=8 and y1=3, and m=6. Thus:
\[y-3=6(x-8)\]

Answer 4

@dumbcow why lol?

Answer 5

: Suppose y varies directly with x, and y = 8 when x = –6. What direct variation equation relates x and y? What is the value of y when x = –2?

Answer 6

Get it in y=mx+b form first.

Answer 7

or is this a diff question?

Answer 8

y=8+-6x

Answer 9

" Suppose y varies directly with x, and y = 8 when x = –6. What direct variation equation relates x and y? What is the value of y when x = –2?"

Is this a separate question from your original one?

Answer 10

yea

Answer 11

.....

Answer 12

I had to look this up.

Answer 13

http://www.freemathhelp.com/direct-variation.html

Answer 14

-6/8 = -2/y

This is a direct variation. Cross multiply and solve for y.

Answer 15

-6y = -16

Answer 16

its good explaining 0/375

Answer 17

0.375

Answer 18

Nikita, would you prefer just a numerical answer?

That will help so much more for your exams.

Answer 19

yup

Answer 20

Believe me none of us remembers every single little thing from algebra. Lol I had to google direct variation of a line.

Answer 21

Suppose y varies directly with x, and y = 8 when x = –6. What direct variation equation relates x and y? What is the value of y when x = –2?
A. y = –0.75x; 1.50
B. y = –1.33x; 2.67
C. y = 1.33x; –2.67
D. y = 0.13x; –0.25

Answer 22

Hmm... still thinking

Answer 23

y = k*x

Solve for k.

8 = k *(-6)

k = -8/6 = -4/3

y = (-4/3)*x

Plug in x=-2 into x and solve.

y=(-4/3)*(-2)

y=8/3

I dunno, I think this is wrong.

Answer 24

b/c y=2.67 this way :-/

Answer 25

Just pick A. B/c the method is absolutely correct. Someone *'ed up on writing the answer choices.