math question

Question

math question

vera_ewing · Answer

attachment

unimatix · Answer

I can help with this.

unimatix · Answer

Okay so do you know what the x and y intercepts are? Can you find the x and y values you are looking for?

vera_ewing · Answer

2 and 5?

carolinar7 · Answer

So what is the slope between those lines

unimatix · Answer

So it line would include (2, 0) and (0, 5) . Does that make sense?

vera_ewing · Answer

Yes, ok. Now what?

unimatix · Answer

Do you know how to find the slope?

carolinar7 · Answer

Find the slope

vera_ewing · Answer

-5/2

carolinar7 · Answer

$$\frac{ y2-y1 }{ x2-x1 }$$

vera_ewing · Answer

So what would the equation be in standard form?

carolinar7 · Answer

y=ax+b I believe

anonymous · Answer

x-intecept of 2 (i.e. the point (2,0)) and a y-intercept of 3 (i.e. the point (0,3)) lie on the line... so repeat the procedure from the previous problem and your golden :D

anonymous · Answer

No standard from is ax+by=c

carolinar7 · Answer

ok

carolinar7 · Answer

True I forgot

anonymous · Answer

y=mx+b is slope intercept 
and point slope is the y2-y1=m(x2-x1)

anonymous · Answer

No probs :D

carolinar7 · Answer

Remember that A has to be a positive and a whole number

vera_ewing · Answer

Wait so what is the equation in standard form?

unimatix · Answer

I've always thought point slope form looked so ugly.

anonymous · Answer

Yea honestly its only a cheat formula to remember the slope formula

unimatix · Answer

get your x value and y value on the same side and you've got standard form.

vera_ewing · Answer

So what would it look like? Can you show me?

unimatix · Answer

an example (but not your answer): 5x+29y = 39

unimatix · Answer

See the x and y are on the same side, constant is on the other.

vera_ewing · Answer

So it would be 2x+5y=-5/2 ?

unimatix · Answer

Nope. Your math is off.

unimatix · Answer

So how I'd solve it is:
y = mx + b
M = slope. Then plug in your x and y

unimatix · Answer

What did you get for you slope?

vera_ewing · Answer

y = -5x/2 + 5 is slope-intercept form right?

unimatix · Answer

Yep!

vera_ewing · Answer

So what would it be in standard form?

unimatix · Answer

So try adding the 5x/2 to each side from slope int.

vera_ewing · Answer

5x+2y=10?

unimatix · Answer

Ah yes. That looks right!

vera_ewing · Answer

Thanks

unimatix · Answer

You're welcome. Oh and if you ever want to check you can always plug in your values!