What is the equation of the line through the origin and (7,-5)?

y1 - y2 / x1 - x2

-5 - 0 / 7 - 0

-5/7

y = mx + b

-5 = -5/7(7) + b

-5 = -5 + b

0 = b

y = -5/7x

Hope this helps! ;)

answer: i believe its b. if you sound out the sentences that sounds wrong.

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204