Triangle abc has been rotated 90° to create triangle def. write the equation, in slope-intercept form, of the side of triangle abc that is perpendicular to segment ef. you must show all work to receive credit.

triangles abc and def are shown. a is at 4, 2. b is at 4, 5. c is at 1, 2. d is at 2, negative 4. e is at 5, negative 4. f is at 2, negative 1. line bc and line ef intersect at point 0, 1.

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

What would the rule be for the reflection of y=-3