What is the y -coordinate of the y -intercept of the graph of 3 x 7 = - 5 y

Question

What is the y -coordinate of the y -intercept of the graph of 3 x 7 = - 5 y 9 + 21 in the xy -plane?

Accepted Answer

The correct answer is 189 5 . A y -intercept of a graph in the xy -plane is a point where the graph intersects the y -axis, which is a point with an x -coordinate of 0 . Substituting 0 for x in the given equation yields 3 0 7 = - 5 y 9 + 21 , or 0 = - 5 y 9 + 21 . Subtracting 21 from both sides of this equation yields - 21 = - 5 y 9 . Multiplying both sides of this equation by - 9 yields 189 = 5 y . Dividing both sides of this equation by 5 yields 189 5 = y . Therefore, the y -coordinate of the y -intercept of the graph of the given equation in the xy -plane is 189 5 . Note that 189/5 and 37.8 are examples of ways to enter a correct answer.

Question what-i