Ineed to find the expanded form of 39,012

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

The graph of a line gets what as the value of the slope gets bigger

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares