Answer:
a, h and k have values 1, -5 and -10 respectively
X and y vary directily means
y=kx
72=3k
divide both sides by 3
24=k
k=24
y=72
It tells you.
(-2, 4)
(-1, 3)
(1, 6)
(3, 5)
(4, 8)
When x is 3, y is 5. The point (3, 5) tells us that.
1) A square has 4 congruent sides, and the perimeter is the sum of these 4 sides. So perimeter = 3x+3x+3x+3x, which can also be expressed by 4(3x), simplified, it equals to 12x.
2) x^2 + 6x + 8
3) x^2 - 4x - 12
