B. 1 and -2 Explanation: First, add up the equations: x-x+3y+y=4 4y=4 y=1 Now, plug y into any of the original equations above and solve for x: -x+1=3 -x=2 x=-2 Therefore, the answer is B. 1 and -2
*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer
Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.