Question

question 1 (5 points) listen what are the resulting coordinates of triangle def after reflecting triangle def across the y-axis? a) d(1, - 4), e(3, -1), f(5, -2) b) d(-1, 4), e(-3, 1), f(-5, 2) c) d(-1, 4), e(3, 1), f(5, 2) d) d(-1, -4), e(-3, -1), f(-5, -2)

Explanation:

Step1: Identify original coordinates

From the graph: $D(1, 4)$, $E(3, 1)$, $F(5, 2)$

Step2: Apply y-axis reflection rule

For a point $(x,y)$, reflection over y-axis is $(-x,y)$.

• $D'( -1, 4)$
• $E'( -3, 1)$
• $F'( -5, 2)$

Answer:

B) D'(-1, 4), E'(-3, 1), F'(-5, 2)