Which order pair is not included in the graph of y= 3x+6 the coordinates is (1,9) (10,36) (3,12) (6,18)
2 answers:
Answer:
The pair is not included in the graph of y= 3x+6 ⇒ <u>(3,12) & (6,18)</u>
Step-by-step explanation:
given ⇒ y = 3x + 6
It is a linear equation, can be graphed easily by supposing two point of x and find the corresponding value of y ⇒ see the table.
See the attached figure.
As shown on the figure, the line passes through all the points except
<u>(3,12) and (6,18)</u>
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Your question is incomplete, here is the complete question;
A football is kicked into the air and follows the path defined by h=-2x^2+16x, where x is the time in seconds and h is the height in meters. What is the maximum height reached by the football?
Answer:
maximum height=h=32 meters
Step-by-step explanation:
The given equation is the equation of the parabola or quadratic equation.
The maximum height of the ball will occur at the axis of symmetry.
For the axis of symmetry let h=0,
so,
comparing this equation to standard quadratic/parabola's equation, we get
a= -2, b=16 and c=0
Formula for axis of symmetry is x=-b/2a
x=-16/2*(-2)
x=-16/-4
x=4 it means axis of symmetry is vertical line through the point x=+4, so the maximum height will occur at x=+4
put x=4 to get maximum height as;
Maximum height
Answer:
Step-by-step explanation:
If the car is depreciating at a constant rate, this indicates that the function is linear. We can find the equation for the linear function by first finding the slope of the line. Let's do that using the slope formula. The coordinates we will use to do this are found in (year, value). Our coordinates are (0, 21500) and (3, 14120). The first coordinate says that before any time goes by at all, meaning when the car was brand new, its value was 21500. The second coordinate says that after 3 years, the value of the car was 14120.
Filling in:
This is the slope. In the context of our problem, it means that for each year that goes by, the car's value goes down $2460.
Now we can use that slope and one of our coordinates to write the equation of the line. We can choose either one of the coordinates to write our equation. Let's use the first one, since it will be easier. Rest assured that regardless of which one you choose, you will get the same equation. We fill in the slope-inteercept form of a line, y = mx + b, where y is the y value from the coordinate, m is the slope we solved for, x is the x value from the same coordinate, and b is the y-intercept. We are solving for b.
21500 = -2460(0) + b and
21500 = 0 + b so
b = 21500. Our equation, then, is
y = -2460x + 21500
If we want to find the value of the car, y, in 5 years, x, we plug in 5 for x and solve for y.
y = -2460(5) + 21500 and
y = -12300 + 21500 so
y = $9200
That means that in 5 year the car will be worth only $9200 when it is 5 years old.