RRB Government Jobs Exams

The slope of the line through A and B must be equal to the slope of the line
through B and C.
(7 - 3)/(4- 2) = (b - 7)/(8 - 4)
solve the above for b to find b = 15.

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RRB Other Question

Which of these functions is even?

a) f(x) = -x 2 + 7
b) g(x) = | x - 6 |
c) h(x) = x 3 + 9
d) j(x) = | x | + 1 A number x is written in scientific notation when it is written in the form: x = a‚ 10 N with 1 |a| < 10 and N is an integer.