Find the value of the unknown angle(s) and state the reason/theorem why

Aline passes through the point (2, -4) and has a slope of 0, what is the equation of the line? plz fast

Compare the cost of the bike trips from the two companies shown. for both the cost in a linear function of the number of days which statements is true

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