Write each equation in standard form.

Question

1.y-3=-2.4(x-5)

-The answer I got was 2.4x + y = 15.

Could someone please check my answer and tell me how to solve it if it wrong? Thanks

Answer 1

Yes, your answer is correct!

Answer 2

In the standard form of an equation, the coefficients are relatively prime integers, so

2.4x + y = 15 , times 5

12x + 5y = 75

Answer 3

Why did you multiply by 5?

Answer 4

in standard form, the coefficents are relatively prime integers.

Answer 5

So for this problem 3y + 2x = 4.5 it would be 30y + 20x = 45( I multiply all the term by factor of 10 to get rid of the decimals) then I would simplify it into 4x + 6y=9. Is this correct?

Answer 6

or just multiply the original equation by 2

6y + 4 x = 9 immediately
or
4x + 6y = 9

Answer 7

Thanks! I didn't think of that.