Question

8.1x-45.y=5.4 solve the equation for y.

Answer 1

8.1x-45.y=5.4 solve the equation for y.

a) y=1.8x - 1.2

b) y=-1.8x + 1.2

c) y=1.8x + 1.2

Answer 2

To solve the equation for y, we need to isolate the term that contains y.

So, let's rearrange the equation:

8.1x - 45y = 5.4

To isolate the -45y term, we can subtract 8.1x from both sides:

-45y = 5.4 - 8.1x

Now, we can divide both sides of the equation by -45:

-45y / -45 = (5.4 - 8.1x) / -45

Simplifying further:

y = (8.1x - 5.4) / 45

Therefore, the solution for y is y = (8.1x - 5.4) / 45.

Answer 3

To solve the equation for y, we need to isolate the term that contains y.

So, let's rearrange the equation:

8.1x - 45y = 5.4

To isolate the -45y term, we can subtract 8.1x from both sides:

-45y = 5.4 - 8.1x

Now, we can divide both sides of the equation by -45:

-45y / -45 = (5.4 - 8.1x) / -45

Simplifying further:

y = (8.1x - 5.4) / 45

Therefore, the solution for y is y = 0.18x - 0.12.

Comparing this result with the given options, we can see that the correct option is:

a) y = 1.8x - 1.2.