Finish solving the system of equations. x – 5y = 6

–x + 2y = –3

–3y = 3

What is the value of y?

Substitute the value of y back into one of the original equations to find the value of x. What is the value of x?

Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

Select all the statements that apply to this figure