Find the value of x on a triangle

answer: both chords and diameters have two endpoints on a circle. diameters must intersect the center of a circle.

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

where is the graph or the picture? ?