Question

Question 4(Multiple Choice Worth 4 points)

.
(08.03)Solve the system of equations and choose the correct answer from the list of options.
X + y = -3
y = 2x + 2

a- five over 3, four over 3
b-negative five over 3, negative four over 3
c- negative 3 over 5 negative 3 over 4
D- 3 over 4, 3 over 5

Answer 1

Hello,

Answer B (-5/3,-4/3)

Explanation:

I am going to use the substitution 's method.

`\left\{\begin{array}{ccc}x+y&=&-3\\y&=&2x+2\\\end {array} \right.\\\\\\\left\{\begin{array}{ccc}y&=&2x+2\\x+2x+2&=&-3\\\end {array} \right.\\\\\\\left\{\begin{array}{ccc}y&=&2x+2\\3x&=&-5\\\end {array} \right.\\\\\\\left\{\begin{array}{ccc}x&=&-(5)/(3) \\\\y&=&2*(-(5)/(3))+2\\\end {array} \right.\\\\\\\boxed{\left\{\begin{array}{ccc}x&=&-(5)/(3) \\\\y&=&-(4)/(3)\\\end {array} \right.\\}`