Your answer would be C love!
You substitute the x with 1
Y=-2x(1)+8
So y = 6
Equation: 9+2x=5,353
-9 - 9
2x=5,344
then divide both sides by 2
x=2,672
A. Frank has 24 marbles. I found this because Dan has 15 and total is 63 so subtract 63-15= 48. 48 divided by 2 people, which are Ellie ans Dan is 24. Dan has 24 marbles.
Ofcourse it is a linear function
why because every of x value of this function is 23 in result always
... so when we draw a chart it will be line on 23 coordinate ;)