Number sense write a six-digit number in which the digit 4 has the value of 40,000

Which equation represents the function on the graph?

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

Can someone answer this question for me