I struggle with, what is x, or the questions with any letter in, can somebody help me?

Step-by-step explanation:

always remember this

here x and y are variables means that they may change value of these 2

x and y are also unknown values which means we should find these values

2 and 2 are co efficient (A number used to multiply a variable)

9 is constant and it's value doesn't change

example

x+y=2

see this equation

it say that there is 2 unknown number which we add up we get 2

so now x=2-y

putting in x+y=2( value of x)

so we get 2-y+y=2

2=2

1 (this is value of x)

now value of y

put in x+y=2 (value of x)

1+y=2

y=2-1

y=1

so now put in x+y=2 value of x and y

1+1=2

the answer to the question is a

step-by-step explanation:

it has the same slope and the same y-intercept.

y + 11 = -7/9(x - 18)

y + 11 =-7/9x + 14

b

y = -7/9x + 3

y-intercept (0, 3)

c

step-by-step explanation:

it isn't d, because the interquartile range is from 27-57. and the interquartile range is basically half the data, it's pretty obvious.

it isn't b, because like i said earlier, the interquartile range is from 27-57. 57-27 is 30. the real range has to be longer

not a either. although it looks like it, 3/4 of the data is not greater than 27. but if c is wrong than this should be correct

the correct answer is c, because 13 is the point in which the plot starts