Given the equation y = 4x - 3.a) if x increases by 1 unit, what is the corresponding change in y? b) if x decreases by 5 units, what is the corresponding change in y?

A) y will increase by 4 unit.

B) y will decrease by 20 units

Step-by-step explanation:

Given equation that shows relation between x and y.

A) If x is increased by 4 units

   New value of  y =  

So, change in y = new value of y- original value of y

Thus, the value of y will be increased by 4 units.

B) If x is decreased by 5 units

   New value of  y =  

So, change in y = new value of y- original value of y

                          = -20

Thus, the value of y will be decreased by 20 units.

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