Pre Calc Quiz Review

Solve the system of equations defined by 6x + 2y = 0 7x + 3y = 2 using matrices. Hint: The value of y is 0 -4 0 3 0 -1 0 -3Ashley and Stephanie went shopping for Father's Day.r at the same store. Stephanie spent $1 [15 for 2 tshirts and 3 pairs of shorts. Ashley bought 3 tshlrts and 2 pairs of shorts for $95. What was the oost of a pair of shorts? (Hint: The equation for Ashley's purchases Is ST + 23 = 95 First determine the equation for Stephanie's purchases and then solve the system of equations using matrices.) '" $1 D for shorts $1 T for shorts '" $15 for shorts '" $25 for shorts An triangle has vertices A, B, C as shown in the diagram. It has been translated vertically and/or horizontally to the triangle with vertices labelled A', B' , and C" using a translation matrix defined as 1. y B C + A B' C' Which of the following matrices is I'? OT = -2 -2 -2 -5 -5 - 5 2 2 O T = 2 -5 -5 -2 5 O T = -2 5 -2 5 -5 -5 OT = -5 -2 -2 -2