Answer:
40-19 = 21
Step-by-step explanation:
I think this is correct dear
Answer:
Step-by-step explanation:
let x represent the number of MB used in a month.
Let y represent the monthly cost of using x MB.
If we plot y on the vertical axis and x on the horizontal axis, a straight line would be formed. The slope of the straight line would be
Slope, m = (36 - 24)/(7 - 3)
m = 12/4 = $3
We would represent the linear equation in the slope - intercept form which is expressed as
y = mx + c
Where
c = y intercept
m = slope
At the y intercept, x = 0. Therefore, the y intercept is the flat monthly fee of $15. It is charged whether MB is used or not. Therefore, the linear equation is
y = 3x + 15
Or
C(x) = 3x + 15
Answer:
(A) The constant of proportionality can be found by dividing a y-value by its
corresponding x-value.
(C) The constant of proportionality is 3.
Step-by-step explanation:
constant of proportionality
y=kx
y/x =k
y=9
x=3
k = 9/3 =3
(A) The constant of proportionality can be found by dividing a y-value by its
corresponding x-value.
y/x =k
TRUE
(B) The constant of proportionality can be found by dividing an x-value by its
corresponding y-value.
FALSE
(C) The constant of proportionality is 3. TRUE
(D) The constant of proportionality is 5.FALSE
