how do you solve y=x+4 and y=-2x+1 using the subsituation method and show work and please give me the correct answer

Consider this equation. |y + 6| = 2 what can be concluded of the equation? check all that apply. there will be one solution. there will be two solutions. the solution to –(y + 6) = 2 will be also be a solution to the given absolute value equation. the solution(s) will be the number(s) on the number line 2 units away from –6. the value of y must be positive since the variable is inside absolute value signs.

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

What does the quadrilaterals on a kid with her art class it is possible to draw a parallelogram that is not a rectangle explain