I don't understand the answer list, but the answer should be a 1/4 chance, or 25%.
Step-by-step explanation:
Black is 40, while yellow is 20, orange is 25 and purple is 15. If we add those all together, we get 100. We need the probability that one is orange, so we divide.
1) Use point-slope formula to find the slope-intercept form (or y = mx + b form) of the equation. m represents the slope, and and represent the x and y values of a point the line intersects. So, substitute for m, -4 for , and 7 for . Then, simplify and isolate y on the left side like so: