Suppose that y equals 2x -3. the following points lie on the graph of this equation: a(a,2a-3), b(b,2b-3), and c(c,2c-3). amy claims that the slopes of ab, bc, and ac are equal. prove amy's claim is correct.

Linear since it is 1st degree (highest exponent of variable is 1)

if they lie on the line, then the slopes are equal

if any 2 points on a line will have the same slope as another set of 2 points (a line's slope never changes in a linear function)