Question

HELP!!
A line has a slope of 3 and contains the point (−1, −8). Which equations represent the line? Choose all answers that are correct.
A. −3x + y = −5
B. 3x + y = −5
C. (y – 8) = 3(x − 1)
D. (y + 8) = 3(x + 1)

Answer 1

what is the equation in point slope form?

Answer 2

Y=mx+b

Answer 3

\(\bf \begin{array}{lllll}
&x_1&y_1\\
&({\color{red}{ -1}}\quad ,&{\color{blue}{ -8}})\quad
\end{array}
\\\quad \\

slope = {\color{green}{ m}}= 3
\\ \quad \\

y-{\color{blue}{ y_1}}={\color{green}{ m}}(x-{\color{red}{ x_1}})\qquad \textit{plug in the values}\\
\qquad \uparrow\\
\textit{point-slope form}\)

Answer 4

is it B and D

Answer 5

well.. what did you get?

Answer 6

Y=mx+b is slope intercept form

Answer 7

YEs it think it is B and D

Answer 8

Can you help me with another one

Answer 9

if you think it is B, plug (x,y) = (-1,-8) into equation B and test it out

Answer 10

what do you get when you do that?

Answer 11

A line has a slope of -1/2 and a y-intercept of 3. Which equation repsent the line? choose all answers.
A. 2y=6+x
B. x+2y=6
C. y= -1/2x+3
D. (y-2)=-1/2(x-2)