Any equation that has the same slope as the line y = -2/3x + 1 but a different y-intercept will be parallel because the lines will never intersect. For example, y = -2/3x + 2 or y = -2/3x + 3.
Lets see! We need to use the pythagorean theorem (a^2+b^2=c^2) to check. So.. 15^2+ 17^2 = 19^2 225+ 289= 361 Hm 225 and 289 do NOT equal 361 therefore it is NOT a right triangle.
