Help me if you want to raid my fridge.

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

The chart below shows the distribution of weeds in yard

Write the converse of the following statement: if the trees have no leaves, then it is fall. if the trees have no leaves, then it is fall. the trees have no leaves, therefore it is fall. it is fall since the trees have no leaves. if it is fall, then the trees have no leaves.