Question

triangle abc has coordinates a(2, 0), b(-1, 5), and c(4, 3). determine the coordinates of the vertices of the image after a reflection in the x - axis

a) a(-2, 0), b(-1, -5), and c(4, 3)
b) a(2, 0), b(-1, -5), and c(4, -3)
c) a(-2, 0), b(1, 5), and c(4, 3)
d) a(2, 0), b(1, 5), and c(-4, -3)

Explanation:

Step1: Recall reflection rule

When reflecting a point $(x,y)$ over the $x - axis$, the rule is $(x,y)\to(x, - y)$.

Step2: Reflect point A

For point $A(2,0)$, applying the rule $(x,y)\to(x, - y)$ gives $A'(2,0)$ since $-0 = 0$.

Step3: Reflect point B

For point $B(-1,5)$, applying the rule $(x,y)\to(x, - y)$ gives $B'(-1,-5)$.

Step4: Reflect point C

For point $C(4,3)$, applying the rule $(x,y)\to(x, - y)$ gives $C'(4,-3)$.

Answer:

B. $A'(2,0), B'(-1,-5), C'(4,-3)$