The diagram show two different buttons and thier weight

Draw a scaled copy of the circle using a scale factor of 2

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

How do you determine if an ordered pair is a solution to a given equation?