The vertices of a triangle are p(–4, 1), q(–2, –8), and r(8, –1). name the vertices of the image reflected across the y axis

When a point is reflected across the y-axis, the y-coordinate remains the same. The x-coordinate becomes the opposite.

P(-4, 1) ---> P'(4, 1)
Q(-2, -8) ---> Q'(2, -8)
R(8, -1) ---> R'(-8, -1)

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.