The equation 0.60 = 0.05x + 0.10y represents the number of nickels x and dimes y needed to add up to 60 cents solve for y then find the number of nickels is 0,2, and 4

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Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)