Question

In the equation z=(x^(2)-1)/(5y), find the value of z when x=6 and y=-1.

Answer 1

The value of z is -7 when x=6 and y=-1, as calculated by plugging the values into the equation z=(x^(2)-1)/(5y).

Step-by-step explanation:

To find the value of z when x=6 and y=-1, using the equation z=(x^(2)-1)/(5y), substitute the values of x and y into the equation:

• First, calculate x^2: 6^2 = 36.
• Then subtract 1 from x^2: 36 - 1 = 35.
• Next, since y = -1, multiply 5 by y: 5 * -1 = -5.
• Finally, divide the result from step 2 by the result from step 3: 35 / -5 = -7.

Therefore, the value of z when x=6 and y=-1 is -7.