In any parabola, the vertex is the turning point. And the x-coordinate of the vertex can be found using

So, in your case, you have

So, your equation actually looks like

Now impose the passing through (2,1), i.e. substitute x=2, y=1 and solve for b:

Answer:
-2.5
Step-by-step explanation:
Slope (m) =
ΔY
ΔX
=
-5
2
= -2.5
θ =
arctan( ΔY ) + 360°
ΔX
= 291.80140948635°
ΔX = 7 – 5 = 2
ΔY = -2 – 3 = -5
Distance (d) = √ΔX2 + ΔY2 = √29 = 5.3851648071345
Equation of the line:
y = -2.5x + 15.5
or
y =
- 5 x
2
+ 31
2
When x=0, y = 15.5
When y=0, x = 6.2
Answer:
The answer is 500
Step-by-step explanation:
500/10=50
Answer:
The first one: -1 1/4
Step-by-step explanation"
Answer:
9:12 and 12:16
Step-by-step explanation:
3/4 = 0.75
9/12 = 0.75
12/16 = 0.75