Which term best describes a proof in which you assume the opposite of what you want to prove

If i have one apple and give you the apple, how many apples do i have?

True or false look at the picture pls : /

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.