It’s a parabola which is y= x^2. We know this because it’s vertex hits the origin. There are 2 answers there for it so just pick one.
Answer:
top is 13 gallons left
bottom is 7.8 gallons left
Step-by-step explanation:
30=1 gallon
90= 3 gallons
246/30= 8.2
8.2*1=8.2
16-8.2=7.8
When the vertex is at the origin and the directrix is at y = -2.5, the the parabola must be facing upwards and have a general formula of y = 4a x^2. In this case, a is equal to 2.5 that is, y = 4*2.5 x^2 equal to y = 10 x^2
y = 3x - 1
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y-intercept )
here slope m = 3
y = 3x + c ← is the partial equation
to find c substitute (- 2, - 7 ) into the partial equation
- 7 = - 6 + c ⇒ c = - 7 + 6 = - 1
y = 3x - 1 ← equation in slope- intercept form
