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3 years ago

Is { (8,5) , (7,5) , (6,2) , (8,3) , (1,-4), (-4,6)} a function? why?

Mathematics

1 answer:

DIA [1.3K]3 years ago

6 0

Answer:

No. because you have One domain value that says 2 different numbers

Step-by-step explanation:

functions cannot have f(8) = 5 and f(8) = 3 at the same time

because then f(8) is not equal to f(8) it cannot be confusing.

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2 years ago

Read 2 more answers

What are 2 equivalent ratios to 27:9?

Andrei [34K]

Answer:

3:1

54:18

Step-by-step explanation:

You can divide both sides by 9 to get one ratio:

27/9:9/9

3:1

You can also multiply both sides by 2 to get another ratio:

27(2):9(2)

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3 years ago

Find the point at which the line joining the two points (-3,-5) and (7,5) cuts they y axis

8090 [49]

Answer:

(0,-2)

Step-by-step explanation:

First we find the equation of the line passes through $(-3,-5)$ and $(7,5)$ .

The slope of the line is

$m=\frac{5-(-5)}{7-(-3)}\\=\frac{10}{10}\\=1$

So by the point slope formula the equation of the line is

$y-5=1(x-7)\\y=x-7+5\\y=x-2$

When $x=0$ we have $y=0-2=-2$ .

Therefore the line joining the two points cuts the y-axis at (0,-2).

4 0

2 years ago

write the formula of the parabola that has x-intercepts (1.3,0) and (-1.3,0), and y-intercept (0,169)

snow_lady [41]

Answer:

y= 169 − $100^{2}$

Step-by-step explanation:

3 0

3 years ago

Subtract (4x2 - x + 6) from (3x2 + 5x - 8).

bearhunter [10]

Step-by-step explanation:

$(4x^2-x+6)-(3x^2+5x-8)=4x^2-x+6-3x^2-5x+8$

By simplifying the right side of the equation, we come up with

$x^2+6x-14$ , or D

5 0

3 years ago