Question

Write the equation of the line that passes through (-1, 5) with a slope of 2 in standard form

Answer 1

A. -2x - y = -7
B. 2x - y = -7
C. 2x - y = 11
D. -2x + y = -11

Answer 2

Can someone actually work through the problem with me and help me learn it?

Answer 3

Give me a minute to type up a reply.

Answer 4

okay, I also one thats about the same but in point slope form if you could help me on that also!

Answer 5

thank you so much by the way!

Answer 6

Let's do point slope first. I don't know if you'll understand the first question without it.

Answer 7

First thing you have to do is find for B to find for B you need to use point slop form
y-y1=m(x-x1)
Fill it in and you get
y-5= 2(x+1)

Answer 8

Are you familiar with the three basic form for a line?

Answer 9

oops no wait sorry about that doing too many things at once to find b you have to put in y=mx+b which would be 5=2(-1)+b

Answer 10

Which you would make
5=-2+B
b=7

Answer 11

k, if you have questions later ill proly see it

Answer 12

What are you doing needing to find the y-intercept. They want the standard form of a line. You have the point-slope form copied down right,

all you have to do is rearrange that to
ax + by = c standard form

Answer 13

point-slope equation from givens

y-y1 = m(x-x1)
y - 5 = 2(x - (-1))

move things around to standard form...
y - 5 = 2x + 2
-2x + y = 2 + 5
-2x + y = 7

which isn't a choice, multiply everything by -1

2x - y = -7

that's it