The image of the triangle RST when rotated 90° counterclockwise around the origin is (-15,5), (-15,15) and (-5,10)
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How to rotate the triangle?</h3>
The coordinates of RST are given as:
R = (5,15)
S = (15,15)
T = (10,5)
The rule of 90° counterclockwise around the origin is:
(x,y) -> (-y,x)
So, we have:
R' = (-15,5)
S' = (-15,15)
T' = (-5,10)
Hence, the image of the triangle when rotated 90° counterclockwise around the origin is (-15,5), (-15,15) and (-5,10)
Read more about rotation at:
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Answer:
-4
Step-by-step explanation:
-3-1= -4
A negative minus a positive= a "larger" positive.
The answer is the first option.
Answer: A = 3
Step-by-step explanation:
Simplify by multiplying
-6a + 45 -a
add like terms
-7a + 45 = 24
-7a = -21
a = 3
