-5b greater than or less than 20

Josephine has a great garden with and area of 2x2 + x - 6 square feet

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

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