Calculate the alope of the line using two different pairs of points

The slope of the line between two points (-1, 2) and (-2, -4) will be:

Step-by-step explanation:

Considering the points

So, the slope of the line between two points (-1, 2) and (-2, -4) will be:

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x