Determine if the equation y = 2/5x - 4 represents a proportional relationship. if so, determine the constant of proportionality.

The constant is 2/5.

Step-by-step explanation:

The given equation is

This linear equation has the form: , where is the slope and is the y-intercept.

So, in this case, we have a slope of 2/5 and y-intercept at (0,-4).

Additionally, the slope represents the inclination of the line, graphically, but also represents the constant ratio of change between variables.

Therefore, the answer is 2/5.

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle