Math Is Fun Forum

17- y-k=m(x-h)
      y-20=-31\14X- -62031\14
       -20                 -20
   Y=-31/14x- -62311/14

18. During which year was there 10 computers per student?
18-  y=   (-31/14)x+62311/14
       Y =  (-31/14)10+62311/14
       Y=-155\7+62311\14
      Y=-310\14+62311\14
      Y=62001\14

and for the point slope form this is whaT i got
y-k=m(x-h)
y-20=-31/14(x-2001)
y-20=-31/14x-62031\14

did i start correct?like the beginning

for number 15 are the ordered pairs (2001,20) (2008,4.5)

in 13 its asking for the point slope so really   115=8(1)+b
                                                                   115=8+b
                                                                   b=123
                                                                 y=-8X+123
is solving for 12 am spouse to do 13 in this equation y-k=m(x-h)
y-115=-8(x-1)
y-115=-8x--8
y-115=-8x+8
-115        -115

y=-8x+-107

is that correct?

y=mx+b

isint the slope 8 ? because 32/4=8

y=mx+b
y=8x+b
83=8(5)+b
83=40+b
83-40=b
43=b
y=8X+43

nop can u give me an equation

is 8

y-115=(-8)(x-1)
y-115=-8x-8
y=-8X- -107
y=-8x+107