Answer:
Step-by-step explanation:
Y - 2 = 5/4 ( x - 4 )
or
y = 5x/4 - 3
Answer:
a certain number that i do not know
Step-by-step explanation:
Means solve for y=mx+b form
so
expand/distribute
y-5=3x+3
add 5 to both sides
y=3x+8
Answer:
D
Step-by-step explanation:
Mean tells us the average (in this case, total marks/ total number of students).
Standard deviation tells us the spread of a set of data from its mean (how much it deviates from the mean).
Thus, standard deviation can be used to determine the consistency of a data. <u>The smaller the standard deviation, the more consistent the data is</u>.
Since 4S has the smallest standard deviation of 1, it shows the most consistent achievement in the test.
