John is using two right triangles to build a rabbit cage. can his right triangles also be isosceles? explain
your answer.

Sure, there's such a thing as an isosceles right triangle.   It's what you get when you draw the diagonal of a square.  It has one right angle (of course) and two 45 degree angles.   It's the shape that vexed the Pythagoreans.

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb