the equations of two functions are y equals - 21x + 9 + y equals - 24x + 8 which function is changing more quickly and why?

Question

Mathematics

Deshawn Shah

27 August, 12:00

the equations of two functions are y equals - 21x + 9 + y equals - 24x + 8 which function is changing more quickly and why?

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Oscar Wallace · Answer 1

By "-21x + 9 + y equals - 24x + 8" I'm assuming you meant

"y = - 21x + 9 AND y equals - 24x + 8." Using " + " to indicate "and" could be confusing.

We then have the system of linear equations

y = - 21x + 9

y = - 24x + 8

The function with the greater slope is the 2nd: y = - 24x + 8 (with the understanding that we're focusing on the magnitude of the slopes). Thus, it is this function that changes more quickly.