Use substitution to solve 1-2.

3x – 3y = 9
x= 7 – 3y

Solutions are x =4 and y = 1

Step-by-step explanation:

In this equation substitute , we get

now substitute y =1 in x equation,

Solutions are x =4 and y = 1

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.