Develop probability distributions: Empirical probabilities 260 / 8
Mastery po
You might need: Calculator
Skill Sum!
Samantha is designing a video game where players get 3 free revives per level. She wanted to test how
many revives players might use on a new level.
Probability

Samantha recruited 50 players to play the level, and she recorded how many revives each player used.
Theoretical
distribution
Fill in the blanks to complete the probability distribution.
Do not round your answers.
Revives used
0
1
2
3
Frequency
6
22
8
Probability
0.12
0.44 0.16
Quiz 1:59
Practice w
up on the
Show Calculator
Noricinny
Unit test
Test your
skills in the
Get 3 of 4 questions to level up to Familiar
Check

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

hope this !

let me know