(b - 3x) + (-5b + 6x - 5)
= b - 3x - 5b + 6x - 5
= b - 5b - 3x + 6x - 5
= -4b + 3x - 5
The table says that the x value represents the number the years since 1985. To find the number of bald eagle pairs in 1998, we need to calculate x:
1998 - 1985 = 13
Now plug 13 in for x to find y:
y = 312.5(13) + 1562.5
y = 5625
Step-by-step explanation:
count the slope, 5 up in 2.5 horizontal steps, slope = 5/2.5 or 2
x intercept is on the graph, 2.5
y intercept is also on the graph, -5