Answer:
Step-by-step explanation:
well thats the graph 4 u
Answer:
Step-by-step explanation:
3x-3+5x+24+44
3x-3+5×+68
3x+5x-3+68
8x+65
X=65÷8
X=8.125
Y = ax² + bx + c
We have to calculate a, b and c from the given table
1st Calculate c:
for x = o, y = -1.55
- 1.55 = a(0)² + b(0) + c → then c = -1.55
and the equation becomes: y = ax² + b.x - 1.55
2nd Calculate a and b:
for x = 2 , y = 17.29
17.29 =a(2)² + b(2) - 1.55 → 4a + 2b - 1.55 = 17.29 or 4a + 2b = 18.84 (1)
for x = 4 , y = 54.93
54.93=a(4)² + b(4) - 1.55 → 16a + 4b - 1.55 = 54.93 or 16a + 4b = 56.48 (2)
Now solve the system of 2 equations:
4a + 2b = 18.84 (1)
16a + 4b = 56.48 (2)
And you will find :
a= 2.35 and b = 4.72 . And the final equation is:
y = 2.35.x² + 4.72x - 1.55
You end up getting x^2 when you finish simplifying the quadratic equation, so you simply make a positive parabola with the vertex positioned at the origin.
Answer:
2y = x, which is a proportional relationship.
Step-by-step explanation:
See the table attached.
The table gives the ordered pair represents a proportional relationship.
Take at least two pairs of the value of x and y.
Let they are (6,3) and (10,5).
Now, the equation for the straight line passing through the two points is given by
⇒ 2(y - 5) = x - 10
⇒ 2y - 10 = x - 10
⇒ 2y = x
Hence, we can write x ∝ y and the constant of proportionality is 2. (Answer)