Answer:
x=1
y= -1
z=2
Step-by-step explanation:
x+y+z=2 and x-y-2z=6
if z=2 then
x+y+2=2 and x-y+4=6
and these become
x+y=0 and x-y=2
usign linear cancellation method we get
2x=2
dividing both sides by 2 we get
x=1
then going back to one of the original equations and plugging x=1 and z=2 we get
1+y+2=2
solving for y we get
y= -1
Answer:
the sum of x and 15 is -16 because it is a straight line which means the straight line is a function.
Answer:
(2,4)
Step-by-step explanation:
To graph, draw a straight line connecting:
(0,0) & (1,2) for y = 2x
(0,6) & (6,0) for y = -x + 2
y = 2x
y = -x + 6
2x = -x + 6
3x = 6
x = 2
y = 2x = 4
Answer:
Step-by-step explanation:
AB and DC are parallel, so ∠B and ∠C are supplementary angles.
∠B = 180°-∠C = 79°
AD and BC are congruent. ∠A = ∠B = 79°
