Solve 18 and 19 please

Step-by-step explanation:

18.

slope of line y=2x-5 is 2

slope of line ⊥ to y=2x-5 is

m=-1/2

eq. of reqd. line through (10,6) with slope -1/2 is

y-6=-1/2(x-10)

multiply by 2

2y-12=-x+10

2y+x=10+12

2y+x=22

2y=-x+22

y=-1/2x+11

19.

slope of line y=12x+5,m=12

eq. of line through (5,2) with slope 12 is

y-2=12(x-5)

y-2=12x-60

y=12x-60+2

y=12x-58

compare with y=mx+b

b=-58

No Robert is not correct because his better long jump was 1.33 foot farther than May's better long jump.

Step-by-step explanation:

Mays jumps

(i)

=>

=>

=>4.667

(ii)

=>

=>

=>4.75

May's better long jump is

Robert jumps :

(i)

=>

=>

=>6.08

(ii)

=>

=>

=> 5.66

Robert's better long jump is

Now the difference between Robert's better long jump and May's better long jump is

=>

=>

=>

=>6.08 - 4.75

=> 1.33