Question

What is the equation of a line passing through (-6, 5) and having a slope of 1/3 ?

1) y=1/3x-23/3
2) y=1/3x-3
3) y-1/3x+7
4) y=3x+7

Answer 1

which equation listed has a slope of 3?

Answer 2

1) y=1/3x-23/3
2) y=1/3x-3
3) y-1/3x+7
4) y=3x+7

Answer 3

which of those choices you just listed out has a slope of 3?

Answer 4

number 3 I think

Answer 5

hint: y = mx+b has a slope of m

Answer 6

for example, y = 7x+10 has a slope of 7

Answer 7

so its 4

Answer 8

choice 4 has a slope of what?

Answer 9

hoo i go it thank is 2

Answer 10

what do you mean?

Answer 11

is answer number 2

Answer 12

if you were to plug x = -6 into x for choice 2, what do you get for y?

Answer 13

i just dont get it

Answer 14

let's say we plug x = 5 into y = 7x+10

y = 7x+10

y = 7(5)+10 ... replace x with 5

y = 35 + 10 ... multiply

y = 45

Answer 15

So when x = 5, then y = 45 (for the equation y = 7x+10)

Answer 16

if x = 2, then what is y when y = 7x+10 ?

Answer 17

any ideas?

Answer 18

noup

Answer 19

replace x with 2 to get y = 7(2) + 10

Answer 20

then evaluate 7(2) + 10 and tell me what you get

Answer 21

24

Answer 22

good

Answer 23

so if y = (1/3)x - 3 and x = -6, then what is y?

Answer 24

??????

Answer 25

replace x with -6 and evaluate

Answer 26

y = (1/3)x - 3

y = (1/3)(-6) - 3

y = ?

Answer 27

-5

Answer 28

the point (-6,5) means x = -6 and y = 5

we want y = 5 and NOT y = -5

Answer 29

so the point (-6,5) does NOT lie on y = (1/3)x - 3

Answer 30

formula (y+5)=1/3(x+6)

Answer 31

(y-5) excuse me

Answer 32

y = 1/3x +7 @briansito

Answer 33

use point slope form @briansito

Answer 34

plug in the numbers and turn the equation into standard form

y= mx + b

Answer 35

@briansito