Answer:
If the x is squared, the parabola is vertical (opens up or down). If the y is squared, it is horizontal (opens left or right). If a is positive, the parabola opens up or to the right. If it is negative, it opens down or to the left.
Step-by-step explanation:
y=ax^2+bx+c
When "a" is positive, opens upward.
When "a" is negative, opens downward.
$31.5
-$45
-30 percent off of $45
30 times 45 divided by 100
1350/100
13.5
45-13.5
y = 2x - 3
y - - 3 = 2(x-0)
y + 3 = 2x
y = 2x -3
