finding a value of y

Question

For the function w, 𝑤(9) = −7, and 𝑤(−7) = 9. If 𝑦 = 𝑤(𝑥), what is the value of y when 𝑥 = −7?

Answer 1

Hello Raigan,

You're told y = w(x)

The phrase "the value of y when x = -7" also means "the value of w(x) when x = -7" because, again, y = w(x)

What is the value of w(x) when x = -7? It is w(-7), which the problem tells you equals 9 [ w(-7) = 9]

Therefore: the value of y when x = -7 is 9

Cheers!