4x+9=25 4x+9=25-9
4x/4=1
16/4=4
4x+9=26
4(4)+9=25
16+9=25
The answer is 4
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5x = 4x + 9 x = 9
4x + 6 = 6x - 12-4x -4x6 = 2x - 12+12 +1218 = 2xx=9
C and D
The inverse of an equation is rewriting it as a function of the other variable. Simply solve the equation for x instead of y. y=9x can be written as x= (1/9)y --> fy=y/9◄ y=4x+6 (or 4x+6=y) -> 4x=y-6 -> x=(y-6)/4 --> gy=(y-6)/4■
x2+11x+11 = 7x+9 x2+11x-7x+11-9 = 0 x2+4x+2 = 0 The above quadratic equation can be solved by using the quadratic equation formula and it will have two solutions.