Y= 3x + 1 y= 2x - 3

When solving the system of equations (shown above) using substitution, the solution to the system is:

1. (4,13)

2. (4,5)

3. (-4,11)

4. (13,-4)

5. (-4,5)

6. (-4,-11)

{y,x} = {-11,-4} or  (-4,-11)

Step-by-step explanation:

System of Linear Equations entered :

 [1]    y - 2x = -3

  [2]    y - 3x = 1

Graphic Representation of the Equations :

  -2x + y = -3        -3x + y = 1  
Solve by Substitution :

// Solve equation [2] for the variable  y

[2]    y = 3x + 1

// Plug this in for variable  y  in equation [1]

[1]    (3x+1) - 2x = -3

  [1]    x = -4

// Solve equation [1] for the variable  x

 [1]    x = - 4

// By now we know this much :

  y = 3x+1

   x = -4

// Use the  x  value to solve for  y

y = 3(-4)+1 = -11

Solution :

{y,x} = {-11,-4}

see below

step-by-step explanation:

7.   there are 10 data points in the set.   the middle point is between 5 and 6.   the middle point in the top half is 8   and the middle point in the bottom half is 3. to find the iqr , take point 8 and subtract point 3

mid term   point 8 = 100   point 3 = 88

iqr = 100-88 = 12

final   point 8 = 93   point 3 = 78

iqr = 93 - 78 = 15

the final has the greatest iqr

6.   b - there is a high data value that causes the data set to be asymmetrical for the males: the data for males are high and asymmetrical .   there is an outlier for the males that skews the data

5.   the   iqr is a better measure of spread for the movies and basketball games.   since the basketball game has an outlier, we do not want to use standard deviation for measurement.  

3.   the exam median is much higher than the class median.   the median line is farther to the right on the exams

2.   there is no way to tell what the means are from the box and whisker plots.