Answer:
the range represents the number of users each month for 24 months
Step-by-step explanation:
this is because the graph shows a 24 month period.
Apply to Row 2 : Row 2 + Row 1
2x + 2y + 3z = 0
y + 4z = -3
2x + 3y + 3z = 5
Apply to Row 3: Row 3 - Row 1
2x + 2y + 3z = 0
y + 4z = -3
y = 5
Apply to Row 3: Row 3 - Row 2
2x + 2y + 3z = 0
y + 4z = -3
-4z = 8
Simplify rows
2x + 2y + 3z = 0
y + 4z = -3
z = -2
<em>Note that the matrix is in echelon form now. The next steps are for back substitution.</em>
Apply to Row 2: Row 2 - 4 Row 3
2x + 2y + 3z = 0
y = 5
z = -2
Apply to Row 1: Row 1 - 3 Row 3
2x + 2y = 6
y = 5
z = -2
Apply to Row 1: Row 1 - 2 Row 2
2x = -4
y = 5
z = 2
Simplify the rows
<u>x = -2</u>
<u>y = 5</u>
<u>z = -2</u>
60/100. Divide by 10: 6/10. Divide by 2: 3/5. She read 3/5 of the book :)
Answer:
y = -3/2x+15/2
Step-by-step explanation:
First calculate the slope
m = (y2-y1)/(x2-x1)
= (0-6)/(5-1)
= -6/4
= -3/2
The slope intercept form of a line is
y = mx+b where m is the slope and b is the y intercept
y = -3/2 x+b
Substitute a point into the equation
0 = -3/2(5)+b
0 = -15/2+b
15/2 = b
The equation is
y = -3/2x+15/2
