Answer:B
Step-by-step explanation:
Answer:
A. The function is linear because all of the points lie on a line.
Step-by-step explanation:
That's how math works my friend :) (And it's the reason he was wrong lol)
Let's take two points so that we can get the equation of the line which goes through those points. P1 (-9, -2), P2 (3, -17):


So, y is the line which goes through the first and last points of the chart.
To proof that the rest of points go through the line as well, we will evalute each point

Since the evaluation of these points don't correspond to the values of the chart we can assure that the relationship is not linear
Answer:
x + 15 = 3 (x - 5)
William’s current age: 15. Years old
Step-by-step explanation:
x + 15 = 3(x-5)
x + 15 = 3x - 15
15 + 15 = 3x - x
30 = 2x
x = 15
The value of cumulative frequency is the sum of all previous frequencies. We should have 26 at the end of the table because all frequency add up to 26
To graph the cumulative frequency, we would need the plots.
Use the end of value range against the cumulative frequency valueRange 40-49, use the value 49 against the cumulative frequency 1
(49, 1)(59, 3)(69, 5)(79, 12)(89, 21)(99, 26)
Plot these on graph and connect them as a curve.