hoose the equation below that represents the line passing through the point (-3, -1) with a slope of 4.

Question

anonymous · Answer

the one that looks like 
$$y+1=4(x+3)$$

anonymous · Answer

ok can you show me how

anonymous · Answer

sure

jackellyn · Answer

@boycrazzy you can use this formula

y – y1 = m(x – x1)

using the points given to you in the problem (x1,y1) and the slope, m.

anonymous · Answer

if your choices look like $y=mx+b$ then we can change that form easily enough 
multiply out on the right 
$$y+1=4(x+3)$$ to get 
$$y+1=4x+12$$ then subtract 1 from both sides and get 
$$y=4x+11$$

anonymous · Answer

ok i get that but it was -1 and -3

anonymous · Answer

if you are asking where the equation comes from, you have a point $(-3,-1)$ and a slope $m=4$
make replacements in the point slope formula 
$$y-y_1=m(x-x_1)$$ to get 
$$y-(-1)=4(x-(-3))$$ which you would really write as 
$$y+1=4(x+3)$$

anonymous · Answer

oh lol that makes perfect sense just wasn't think thank you

anonymous · Answer

yw

anonymous · Answer

don't forget the minus sign is in the formula
if one of the numbers happens to be negative, there is then going to be two minus signs