HELP ME GUYS PLZ AH

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

What is the y intercept of f(x)=(1/2)^x?

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.