A triangle is rotated 90° about the origin. Which rule describes the transformation?
(x, y) – (-x-Y)
(x, y) - (-y. x)
(x, y) - (-y.- )
(x, y) - 4.-)

i’m here for points.

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

yes the data was not prsented

step-by-step explanation: