What is the constant of proportionality in the equation?

y= 5 x

a. 0
b. 1
c. 4
d. 5

5

Step-by-step explanation:

In Y = 5X .

Y is proportional to X.

Now, When We will increase X by 1 , Y will increase by 5,

As we can see from the equation

So Constant of proportionality is 5.

{Y = 5X

= 5}

Constant of proportionality is the ratio between two quantities which are directly proportional to each other .

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.