# A triangle has corners at (7, 1 ), ( 3 , 2), and ( 8 , 5 ). What will the new coordinates of the triangle be if it is reflected across the x-axis?

Jul 29, 2018

$\left(7 , - 1\right) , \left(3 , - 2\right) \text{ and } \left(8 , - 5\right)$

#### Explanation:

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

• " a point "(x,y)to(x,-y)#

$\left(7 , 1\right) \to \left(7 , - 1\right)$

$\left(3 , 2\right) \to \left(3 , - 2\right)$

$\left(8 , 5\right) \to \left(8 , - 5\right)$