Section+1.5

(Answers from Mandy, Elizabeth, and Emily) || Student Feedback || Teacher Answers || switch their x- and y-values. Also, since the original function is one- to-one, its inverse will be a function. ||  || Correct || values of 1 and 2 for "t" to get two ordered pairs. Plug in 1 for (t+1,2t+3) and get (2,5). Plug in 2 and get (3,7). Find the slope by using the (y2-y1) / (x2-x1) equation --> (7-5) / (3-2) = 2 / 1 = 2 ||  || Correct - nice explanation ...
 * Student Answers
 * 39. **TRUE** - Inverse functions simply
 * 40. **TRUE** - For example, plug in the

also - if you eliminate the parameter "t" you will obtain the equation y=2x+1 || is the answer to the original problem) is (-2,1). Confirmed by plugging the x- and y-values into the equation x²y+5y=9. You find the inverse of that by switching x and y, giving you an ordered pair of (1,-2). Thus, you end up with answer E. ||  || Correct || Condense it to get x(y²-3)=12. Switch x and y for the inverse, and plug in the values. 1(4²-3)=12-->13=12. [false] ||   || Correct || original: f(x)=3x-2 --> x=3y-2 --> ((x-2)/3)=y ||   || Correct || orginal: f(x)=x³+1 --> x=y³+1 --> x-1=y³ --> y=[cube root of (x-1)] ||   || Correct - nice explanations for ALL of these answers! ||
 * 41. **E** - the inverse of answer E (which
 * 42. **B** - Original equation is xy² - 3x=12.
 * 43. **C** - switch x and y and solve for y.
 * 44. **A** - switch x and y and solve for y.