Answer:
y=3/4x+5.2
Step-by-step explanation:
y2-y1/x2-x1
6.5-0.5-=6
2--6=2+6=8 (2 negatives make a positive)
6/8 (simplify)=3/4
crosses y at 5.2
<h3>18 months will pass before the two friends have the same hair length</h3>
<em><u>Solution:</u></em>
Let "x" be the number of months
Joni’s hair is 13 inches long and grows at an average rate of ⅔ in per month

Her friend Kate’s hair is 16 inches long and grows at an average rate of ½ in per month

<em><u>For two friends to have the same hair length, eqn 1 must be equal to eqn 2</u></em>

Thus 18 months will pass before the two friends have the same hair length
If x=2, y=6 using the given equation y=3x
Then if x=10, y=3(10)=30
(10,30)
Hope it helped!
1,655,000 maybe I not entirely sure sorry
They each would pay 2.55
12.75 divided by 5 = 2.55