Determine the sign (+ or -) of the slope of each graph. (5 points each) 1) 3y=9 -4x

2) 3y=4x-9

3) 4x+3y =9

Step-by-step explanation:

Given the table:

Month              f(x) = Number of imports    g(x) = Number of exports

January (1)                3                                                1

February (2)             4                                                3

March (3)                  5                                                5

April (4)                     6                                                7

From the table, it is clear that:

Number of imports = number of month + 2

so

also

Number of exports  = 2(number of month) + 1

so

Therefore, number of imports equals the number of month plus one. i.e. , which is a linear function.

If we compare it with slope-intercept form of the line

Then,

slope = m = 1

y-intercept = 2

Also number of exports equals is also a linear function.

i.e.

Here,

slope = m = 2

y-intercept = -1