What is the first step when rewriting y= -4x^2+2x-7 in the form y=a(x-h)^2+k

A) 2 must be factored from 2x-7
B) -4 must be factored form -4x^2+2x
C) x must be factored from -4x^2+2x
D) -4 must be factored from -4x^2-7

Are triangles the congruent? write the congruency statement. what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?

Asinusoidal function whose frequency is 1/6pi

Look at this system of equations. -3x + 3y = 12 y = x + 4 the solution set of this system is best explained by which of these statements? a) the graphs of the equations are the same line because the equations have the same slope and the same y-intercept. the system has infinitely many solutions. b) the graphs of the equations are parallel lines because they have the same slope but different y-intercepts. the system has no solution. c) the graphs of the equations are lines that intersect at one point because the equations have the same slope but different y-intercepts. the system has exactly one solution. d) the graphs of the equations are lines that intersect at one point because the equations have the same slope and the same y-intercept. the system has exactly one solution.