Question

A function is expressed by the formula y = 2x + 7. Find the value of y if x is equal to 1; -20; 43.

Answer 1

when x = 1 then y = 9

when x = -20 then y = -33

when x = 43 then y = 93

Explanation:

Just replace the given values of x ( which are 1 , -20 , 43 ) in the function