The graph shows a system of which two equations? A.) y = x - 18 and y = x + 4
B.) y = -x +18 and y = 4/3x + 4
C.) y = 18x and y = 4x
D.) y = -x + 18 and y = 3/4x + 4

y = -x + 18 and y = 3/4x + 4

Step-by-step explanation:

For the line with positive slope. Using the coordinate points (0,4) and (8, 10)

Slope m = 10-4/8-0

m = 6/8

m = 3/4

Get the intercept

Substitute m = 3/4 and (0,4) into y = mx+b

4 = 3/4(0) + b

4 = 0+b

b = 4

Get the equation;

y = 3/4 x + 4

For the line with negative slope

Using the coordinate (0,18) and (8, 10)

Slope m = 10-18/8-0

m = -8/8

m = -1

Get the intercept

Substitute m = -1 and (0,18) into y = mx+b

18 = -1(0) + b

18 = 0+b

b = 18

Get the equation;

y = -x + 18

Hence the equations are  y = -x + 18 and y = 3/4x + 4

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

yes because they have the same amount of green and blur marbles.

step-by-step explanation: