Question

Find the output of the function y=-3x - 7 when the input is - 5

Answer 1

Find the value of the function y=3x^2 - 21 when x = 4

Answer 2

To find the output of the function y = -3x - 7 when the input is x = -5, you simply substitute -5 for x in the equation and calculate the result:

y = -3(-5) - 7
y = 15 - 7
y = 8

So, when the input is -5, the output of the function y = -3x - 7 is 8.

Answer 3

To find the value of the function y = 3x^2 - 21 when x = 4, plug in the value of 4 for x and then compute y:

y = 3(4)^2 - 21
y = 3(16) - 21
y = 48 - 21
y = 27

So, the value of the function y = 3x^2 - 21 when x = 4 is 27.