What is the range of the following relation? a.)all real numbers b.) x ≤ 0 c.) y ≤ 0 in advance!

Can someone explain the elimination method to me for this problem?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Drag each expression to the correct location on the solution. not all expressions will be used. consider the polynomial 8x + 2x2 - 20x - 5. factor by grouping to write the polynomial in factored form.