Which phrase best describes the graph of a proportional relationship

Mathematics

2 answers:

Setler [38]2 years ago

4 0

In proportional, it is y/x=k or y=kx
basically it is like y=mx+b, it is a line

Vlad1618 [11]2 years ago

4 0

the complete question is

Which phrase best describes the graph of a proportional relationship?

A.a straight line passing through the origin

B.a straight line

C.a curve

D.not a straight line

we know that

A relationship between two variables, x, and y, represent a proportional relationship (direct variation) if it can be expressed in the form

$\frac{y}{x}=k\\ or\\ y=kx$

the equation $y=kx$ is a straight line passing through the origin with slope equal to k

therefore

the answer is the option

A.a straight line passing through the origin

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What is the slope of the line that passes through (8,5), (-7,20)?

Kaylis [27]

-1, because the equation for the slope is y2-y1/x2-x1. So let's bring the y value in the second set of point, which is 20, and bring the first y value in the first set of points, which is 5. 20-5 is 15. Now let's subtract the x values. So the second x from the second parentheses x value is -7, and the first x value from the first parentheses is 8. -7-8 is -15. Now we have this division equation, 15/-15, which is -1. So therefore, the slope of the line will be -1.

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2 years ago

!!!HELP!!!

matrenka [14]

Answer: C. Parabola

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