In 5_,278, the difference between the values of the digits in the thousands and the tens is 8,930. what is the digit in the thousands

Answer-

The digit in the thousand place is '9'.

Solution-

The given number is 5_278.

The difference between the values of the digits in the thousandth place and the tenth place is 8930.

The digits in the tenth place is already given, which is 7

Let's assume the digits in the thousandth place is x,

So the value of the thousand's becomes

and the value of the ten's is 7 × 10 = 70

Writing an equation for this,

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0