Joe claims that the equation y = 2x + b, where b is a real number, represents the graph of a straight line. which statement best classifies joe's claim? a. joe's claim is true only when b is 0. b. joe's claim is true for all values of b. c. joe's claim is not true for any value of b. d. joe's claim is true only when b is not zero.

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.