Mathematics, 31.08.2021 18:20, Theblackdot15

Suppose y varies directly with x. If y = –4 when x = 8, what is the equation of direct variation? Complete the steps to write the equation of direct variation.

Start with the equation of direct variation y = kx.
Substitute in the given values for x and y to get
.
Solve for k to get
.
Write the direct variation equation with the value found for k. The equation is
.

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 18:00, whaddup8428

Carmen begins her next painting on a rectangular canvas that is 82.7 cm long and has a area of 8,137.68 cm2. will the painting fit in a frame with an opening that is 82.7 cm long and 95 cm wide? explain

Answers: 3

continue

Mathematics, 21.06.2019 18:00, glocurlsprinces

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

Answers: 1

continue

Mathematics, 21.06.2019 19:50, Roshaan8039

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

Answers: 3

continue

Mathematics, 21.06.2019 22:30, wolfiewolffromsketch

What number is 7 units left of -15?

Answers: 1

continue

Do you know the correct answer?

Suppose y varies directly with x. If y = –4 when x = 8, what is the equation of direct variation?...