Question

Which is the equation to the line passing through points (2, –7) and (5, –1)?

Answer 1

y = 2x – 8

y = – 2x + 9

y = 2x – 11

y = – 2x + 6

Answer 2

Could it be B?

Answer 3

\(\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
&(2\quad ,&-7)\quad &(5\quad ,&-1)
\end{array}
\\\quad \\

slope = m= \cfrac{rise}{run} \implies \cfrac{y_2-y_1}{x_2-x_1}
\\ \quad \\

y-y_1=m(x-x_1)\quad \textit{plug in your values and solve for "y"}\)

Answer 4

it would not be B
first you would want to find the slope
given the formula that jdoe0001 gave you
plug x1 = 2 , y1 =-7 , x2 = 5 , y2 = -1 so
\[slope = \frac{ rise }{ run } = \frac{ y _{2}-y _{1} }{ x _{2}-x _{1} } = \frac{ (-1)-(-7) }{ (5)-(2) }\]

Answer 5

first find the slope, tell me what you got :)

Answer 6

6/3 or 2/1

Answer 7

yep and the equations are in this format
y = mx + b
when m = slope and b = y-intercept
so since slope = 2 = m
y = 2x + b
^ then the answer can not be B or D

Answer 8

So A?

Answer 9

@jigglypuff314

Answer 10

are you just guessing? -.-"
no, it's not A...

Answer 11

Frankly, yes. I've been doing this since early morning and I'm just trying to get it done. Thanks for your help though