Tell whether the equation represents a linear function.

Mathematics

1 answer:

kumpel [21]3 years ago

5 0

<h3>Answer: Is <u>not</u> a linear function</h3>

The equation y = 4x^2 + 5x + 9 is nonlinear. More specifically, it is a quadratic. Graphing this equation shows a curved parabola. All linear functions are straight lines when you graph them.

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Assume that y varies directly with x then solve y = 2.5 x = .5 when x = 20

velikii [3]

Step-by-step explanation:

y=2.5| ?

x=0.5| 20

It'll be criss-crossed then it'll be:-

2.5×20=50

5 0

3 years ago

What is the length of diagonal BD in rectangle ABCD if BC=5 and CD=8.

svetlana [45]

I hope this helps you

6 0

3 years ago

Serious answers only. Do not answer if you dont know please!How does the graph of the circle described by x^2 + (y-7)^2 = 49 cha

Vladimir79 [104]

Answer:

The circles radious increases

The circles moves left

The circles moves down

Step-by-step explanation:

The equation of a circle can be written as $(x-a)^2+(y-b)^2=r^2$ , where "r" is the radious, and (a,b) are the coordenates in the axis x and b respectively.
Then, in the first circle the coordenates are (0,7), which means that the circle will be center there, and the radious is 7 ( $\sqrt{49}$ ).
The second circle have different coordenates: (-5,4), which means that the circle has moved left (from 0 to -7 in the x axis) and down (from 7 to 4 in the y axis). Additionally, its radious has increased from 7 ( $\sqrt{49}$ , from 8 ( $\sqrt{64}$ ).
See the attached figure please.
Then, the <u>correct answers</u> are: