Determine whether the line through (0, 4) and (2, 0) and the line through (-2, 3) and (4, 2) are parallel, perpendicular, or neither. (not by graphing)

Janice determined there were 10 possible outcomes when tossing two coins and spinning a spinner numbered 1 through 6. what is the correct number? what might have been janice's error?

Which statements are true about additional information for proving that the triangles are congruent check all that apply

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.