Question

Select the equation of the line that passes through the point (–2, 1) and has slope 3 in point-slope form.

A.
(y – 1) = 3(x + 2)

B.
(x + 2) = 3(y – 1)

C.
(x – 2) = 3(y + 1)

D.
(y + 1) = 3(x – 2)

@TheSmartOne @MW3030

Answer 1

ok, so what is point-slope form?

Answer 2

y - y1 = m(x - x1)

Answer 3

ok, and our slope is 3

plug that in place of m

Answer 4

y - y1 = 3(x - x1)

Answer 5

now our point is (-2,1)

so in place of y_1, we have to put the y value of the point. What is the y-value of the point (-2,1)

Answer 6

1?

Answer 7

correct, so now we have

y - 1 = 3(x-x1)

Answer 8

Okay

Answer 9

now what is x_1 going to be?

Answer 10

And then 2 would go in place of the x1 right?

Answer 11

-2** yup :)

Answer 12

Awesome so it would be D?

Answer 13

nope look at it carefully

Answer 14

y - 1 = 3(x - (-2))

what is x - (-2) = ?

Answer 15

x + 2

Answer 16

So A?

Answer 17

correct! :D

Answer 18

Alrighty! Only 2 more yeah!

Answer 19

Great :D