Math Homework Help????????

Question

Make a table of values for each equation.

I know how to do this, but not sure what to do if the problem is:

y = 425 - 5x

??

Answer 1

well...if

x = 1 ---> y = 425-5 = 420

x = 2 ---> y = 425-10 = 415

x = 3 ---> y = 425-15 = 410

Answer 2

substitute

y=425 if x = 0

y=420 if x = 1

y=415 if x = 2

y=410 if x = 3

y=405 if x = 4

so every time x increases by 1, y decreases by 5

Answer 3

Hi,

ANSWER:

X      Y

20 | 325

30 | 275

40 |  225

50|  175

60 | 125

HOW TO DO IT:

Just substitute values for x and solve for y.

Example:

Y=425-5x

Y=425-5(20)  (Substitute 20 for x.)

Y=425-100

Y=325

Y=425-5x

Y=425-5(30)  (Substitute 30 for x.)

Y=425-150

Y=275

And so on for the other values.

Students are probably more familiar with the equation written in this form:

5x+y =425

But it really doesn’t matter what form it’s in.

Hope this helps.

FE