Question

Дана функция y=4−a. При каких значениях a значение функции равно 7?

Answer 1

y=4−a

4-a=7

-a=7-4

-a=3 /:(-1)

a= - 3

Answer 2

To find the values of 'a' for which the function's value is equal to 7, we can set the function y = 4 - a equal to 7 and then solve for 'a'. The equation would be:

4 - a = 7

To isolate 'a', we need to get rid of the constant term on the left side (4) by moving it to the right side of the equation:

-a = 7 - 4 -a = 3

Next, we can solve for 'a' by multiplying both sides by -1 (to change the sign):

a = -3

So, when 'a' is equal to -3, the value of the function y = 4 - a will be 7.