Answer:
(-3,3)
Step-by-step explanation:
4-7 is -3 and 1+2 is 3 so it is (-3,3)
y = - 4
collect terms in x
xy + 4x = 1 - 20 = - 19 ( factor out x )
x(y + 4 ) = - 19 ( divide both sides by ( y + 4) )
x =
x will be undefined if the denominator of the fraction is zero
y + 4 = 0 ⇒ y = - 4
x has no solution for y = - 4
Step-by-step explanation:
all......................
No......you end up with x<3....so there is an open circle at 3