Answer:
You'd have to go step by step to get the actual value of y. Then solve the equations by inputting the value for y, therefore eliminating y from both equations
Answer:
the second option and x=20
Answer:
m=-3
x1,y1=1,-5
we have,
y-y1=m(x-x1)
y-(-5)=-3(x-1)
y+5=-3x+3
3x+y+2=0 is the required eqn
Answer:
<h2>A</h2>
Step-by-step explanation:
la recta:
(*)
P=(xo,yo)

substituindo:

Seja P=A=(xo=1,yo=3), utilizando a formula (*)

Answer:
B
Step-by-step explanation:
It's the only one with an addition sign...... seems logical, let me know if you got it correct