What is the gradient of 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

With finding limits of multi variable !

What is the ratio of the length of an object in yards to the length of the same object in miles?