Find the inverse of f(x) = 2x - 5. The 4 options are in the pic below. PLEASE HELP.
2 answers:
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7) Certainly there is a typo in the statement, just see that the expression of item (ii) is different from that of item (i). Probably the correct expression is: 
. With this consideration, we can continue.
(i) Let E the expression that we are analyzing:
Since (x-1)² is a perfect square, it is a positive number. So, E is a result of a sum of two positive numbers, 2(x-1)² and 3. Hence, E is a positive number, too.
(ii) Manipulating the expression:
So, it's the case when E=0. However, E is always a positive number. Then, there is no real number x that satisfies the expression.
8) Let E the expression that we want to calculate:
Multiplying by (2-1) in the both sides:
Repeating the process, we obtain:
(i) Let E the expression that we are analyzing:
Since (x-1)² is a perfect square, it is a positive number. So, E is a result of a sum of two positive numbers, 2(x-1)² and 3. Hence, E is a positive number, too.
(ii) Manipulating the expression:
So, it's the case when E=0. However, E is always a positive number. Then, there is no real number x that satisfies the expression.
8) Let E the expression that we want to calculate:
Multiplying by (2-1) in the both sides:
Answer:
Correct answer: Option b
Step-by-step explanation:
<u>Equation Of A Line </u>
The standard equation of a line is given by
Where m is the slope of the line and can be computed as
Where (a,b), (c,d) are two known points of the line. Let's use the points (-3, 1), (3, 2)
The value of b can be obtained by using any point and the value of m. Let's use (3,2)
The equation of the line is
Multiplying by 6
Rearranging
Correct answer: Option b