Solve the system by substitution. -x-3y = 20
-6x + y = -13

I don’t remember how to solve by substitution someone help?

In which form is the following function written? y = - 2(x – 3)(x + 5)

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.

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15