A triangle has corners at (2, -7 ), ( 1 , -3), and ( 4 , 3). What will the new coordinates of the triangle be if it is reflected across the x-axis?

Mar 28, 2018

2,7),(1,3)" and "(4,-3)

Explanation:

$\text{under a reflection in the x-axis}$

• " a point "(x,y)to(x,-y)#

$\Rightarrow \left(2 , - 7\right) \to \left(2 , 7\right)$

$\Rightarrow \left(1 , - 3\right) \to \left(1 , 3\right)$

$\Rightarrow \left(4 , 3\right) \to \left(4 , - 3\right)$