Question

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

y −?? =?? (x − 9)

Answer 1

@iGreen @Nnesha

Answer 2

Plug the points in the slope formula and find the slope.

Answer 3

ok

Answer 4

-2 and -12

Answer 5

No..

Answer 6

-8 = y2
7 = y1

4 = x2
9 =x1

Answer 7

and then divide right

Answer 8

Yep

Answer 9

2 and 2

Answer 10

No..

\(\dfrac{-8 - 7}{4 - 9}\)

Answer 11

-15/-5=3

Answer 12

still confused DX

Answer 13

Correct.

Answer 14

So the slope is 3.

\(y - y_1 = m(x - x_1)\)

Where \(y_1\) is the y-value of the point, \(x_1\) is the x-value of the point, and \(m\) is the slope.

So we have:

\(y - y_1 = 3(x - 9)\)

So do you know what 'y1' is going to be?

Answer 15

is it kinda the same thing when we figured out the other one.

Answer 16

?

Answer 17

Sort of

Answer 18

What is in the 'x1' place?

Answer 19

9

Answer 20

Yes, so the point must have a '9' for the 'x'

Answer 21

Which one of our points has that?

Answer 22

(9,7)

Answer 23

Correct, and what's the y-value?

Answer 24

I gtg D: so cya

Answer 25

Oh, well the y-value is 7..so that goes at 'y1'.

\(y - 7 = 3(x - 9)\)