Question #b97a7

1 Answer
Nov 14, 2017

#y=-1/4x+2# and #y+3=7(x+1)#

Explanation:

Slope intercept form is #y=mx+b#, where #m# is the slope and #b# is the y-intercept. Since #m=-1/4# and #b=2#, plug those in to get #y=-1/4x+2#.

The general equation for point-slope form is #(y-k)=m(x-h)#, where #m# is slope and #(h,k)# is some point on the line.
We'll use #(-1,-3)# as #(h,k)# for this line. For the #(y-k)# part, we have #y-(-3)#, or #y+3#.
Likewise, #(x-h)=(x-(-1)), or x+1#.

Plugging in this information gives us #y+3=7(x+1)#.

You know, the really beautiful thing about algebra is that it allows us to measure the unknown! Have fun!