fleetwoodfan
Answered

  1. A line passes through (−1, 7)(−1, 7) and (2, 10)(2, 10).

Which answer is the equation of the line?


a: −3x+y=4−3x+y=4


b: −x+y=8−x+y=8


c: −x+y=12−x+y=12


d: −3x+y=16

  1. There is 1 inch of water in a pool. The water level is increasing at 0.75 inches per minute. Which linear equation represents the total depth of the water, in inches, after x minutes?

a: 1+y=0.75x1+y=0.75x


b: y=0.75x+1y=0.75x+1


c: y=0.75xy=0.75x


d: x=0.75y

  1. Which answer is an equation in point-slope form for the given point and slope?

Point: (5, 9)(5, 9); Slope: 2


a: y−9=2(x−5)y−9=2(x−5)


b: y−5=2(x+9)y−5=2(x+9)


c: y−9=2(x+5)y−9=2(x+5)


d: y+9=2(x−5)

Verified Answer :

mrinconj
  1. y-7=(10-7)/(2--1)(x--1)
        y-7=x+1
        -x+y=1+7
        answer: -x+y=8 (letter b)

    2. y=0.75x+1 because it begin in 1 and increase 0.75in per each hour (letter b)

    3. letter a, only replace the pointinto the formula y-y1=slope    (x-x1), for your ponit x1=5 and y1=9