Y= 2x
3x-y=15

solve by substitution

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120