Question

Complete the equation for the linear function whose graph contains the points
(9, 7) and (4, –8).

y −____ =____(x − 9)

Answer 1

this is point slope form

Answer 2

they entered in for x1 the value 9
so we know y1 should be what?

Answer 3

\[y-y_1=m(x-x_1) \\ y-y_1=m(x-9)\]

Answer 4

9

Answer 5

when x is 9 y is?

Answer 6

look at your ordered pairs given

Answer 7

7

Answer 8

you have (9,7) and (4,-8)


(4,-8) tells us when x=4 y=-8
so
(9,7) tells us when x=9 y=?

Answer 9

yes

Answer 10

so y1 =7 since x1=9

Answer 11

\[y-y_1=m(x-x_1) \\ y-y_1=m(x-9) \\ y-7=m(x-9)\]

Answer 12

we talking about how to find the slope on one of your questions

Answer 13

remember this:
\[m=\frac{y_2-y_1}{x_2-x_1}\]

Answer 14

use the two points given to find the slope

Answer 15

ok give second to figure it out plz

Answer 16

-15/-5

Answer 17

if i simplify it i would get -3/-1 and then get -3

Answer 18

so it would be y-7=-3(x-9)?

Answer 19

@freckles

Answer 20

\[m=\frac{7-(-8)}{9-4}=\frac{15}{5}=3\]
-3/-1 shouldn't be -3

Answer 21

should be 3

Answer 22

-/-=+

Answer 23

yes?

Answer 24

oh

Answer 25

oh i was seeing if you where there so it would be y-7=3(x-9)?

Answer 26

yes the slope is 3
and that line is correct

Answer 27

thanks :)