Question

i need help :(
please if you don't know don't answer it. Thank you​

Answer 1

Equation of a straight line: y = mx + b.

(1) Y-intercept = 4

Slope = 9

So, eqn : y = 9x + 4

=> 9x - y + 4 = 0

(2) m = 11

one of the soln = (0,7)

Formula: (for finding eqn with slope and one soln)

y - y1 = m(x - x1)

=> y - 7 = 11x

=> 11x - y + 7 = 0.

(3) Eqn: 5x - y - 13 = 0. (Refer to the above method.)