. In the adjoining fig-6 , name a) any 4 pairs of intersecting lines. b) 3 non – collinear points c) 4 collinear points

a)pl,pm,pn,ql

b)B,C and F are non-collinear points

c) A,C and E are collinear points

B, D and F are collinear points

Step-by-step explanation:

a) any 4 pairs of intersecting lines.

Line p intersects line l , line m and line n

Line q intersects line l , line m and line n

So, 4 pairs of intersecting lines are : pl,pm,pn,ql

b)3 non - col-linear points

Three or more points that lie on a same straight line are called collinear points.

When points are not collinear , then they are said to be non-collinear

So, B,C and F do not lie on the same line

So, They are non-collinear points

c)collinear points

A,C and E lies on same line

So, They are collinear

B, D and F lies on same line

So, they are collinear

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".