8th Grade Functions: Baseball Cards A student has had a collection of baseball cards for several years.
Suppose that B, the number of cards in the collection, can be described
as a function of t, which is time in years since the collection was started.
Explain what each of the following equations would tell us about the
number of cards in the collection over time.
B= 200 + 100+
b.
B= 100 + 2007
C.
B= 2000 -1001
d. B= 100 - 2001

each side has a different length.  

step-by-step explanation:

4 puzzles in 3 hours

step-by-step explanation:

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form