F(x) = 17 - 2x Find f(a + 7)
1 answer:
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Answer:
x=-3,y=-2
Step-by-step explanation:
Given 2 expressions
S1:
S2:
Write one equation in terms of any variable (x or y)
Here I am writing S1 in terms of y
Substitute this value of y as the value of y in S2
⇒
Therefore
Substitute this value of x in any of the expressions S1 or S2
Here i am substituting in S2
⇒
Therefore x=-3 and y=-2