Every time x increases by 1,y decreases by 3,and when x is -6,yis-3.which function models the realation ship between x and y?
a)y= -6x-21
b)y= -6x-3
c)y= -3x-3
d)y= -3x-21

D.

Step-by-step explanation:

We have been given that every time x increases by 1,y decreases by 3. This means that slope of our given line is negative 3.

We will use slope-intercept form of equation to find the required function.

, where,

m = Slope of line,

b= The y-intercept.

Upon substituting and and in slope-intercept form of equation, we will get,

Upon substituting and in slope-intercept form of equation, we will get our required equation as:

Therefore, option D is the correct choice.

450 is the final answer! : )

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol