What is the value of the function y = 0.5x – 10 when x = 9?

y = ___
@Legends @Nibby

Question

What is the value of the function y = 0.5x – 10 when x = 9?
 
y = ___
@Legends @Nibby

anonymous · Answer

For this problem, we're just going to substitute 9 for x, so the equation will look like:$$y = 0.5(9) - 10$$
To solve this, simply times 0.5 by 9, and then minus the 10 from the number to get your Y. Can you solve this?

anonymous · Answer

yes! thanks! @Nibby

anonymous · Answer

You're welcome :) If I helped, make sure to hit 'Best Response' and close the question.

anonymous · Answer

so the answer is -5.5? @Nibby

anonymous · Answer

Well, to find it, we do:$$0.5 * 9 = -4.5$$ Next, we plug that into the equation to get: $$y = 4.5 - 10$$ If we plug 4.5 - 10 into a calculator, we get -5.5.

So, yes! Your answer is -5.5. Good job!