The vertices of ∆PQR are P(–3, 8), Q(–6, –4), and R(1, 1). If you reflect ∆PQR across the x-axis, what will be the coordinates of the vertices of the image ∆P′Q′R′?

P'(–3, -8), Q'(–6, 4),  R'(1, -1).  

Step-by-step explanation:

When you reflect a point (x, y) across the x-axis, the x-coordinate remains the same, but the y-coordinate gets the opposite sign.

The rule is

(x,y) ⟶ (x,-y)

Thus,

P(-3,8) ⟶ P'(-3, -8)

Q(-6,-4) ⟶ Q'(-6, 4)

R(1,1) ⟶ R'(1, -1)

The coordinates of  the image triangle are:

P'(–3, -8), Q'(–6, 4),  R'(1, -1)

The diagram below shows your source and image triangles. The red and blue arrows show how the points moved during the reflection.

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.

sine

step-by-step explanation: