Question

solve the system of equations:
2x + 3y = 1
y= 3x + 15

Answer 1

wow, that is great, I would have never figured that one out. Thanks so much. so x = 4 the answer or -7/3?

Answer 2

the answer written out should be in ( , )
would it be like (-7, 3)

Answer 3

x = 4 and y = -7/3, check if the answer is right for me? :P

Answer 4

oh then its (4, -7/3)

that is (x, y)

Answer 5

this is very confusing. Thanks again.

Answer 6

hang on.. its x = -4 and y = 3

Answer 7

I have another that has been making me crazy
it is (-3,2) with a slope of -2. what is the slope intercept?

Answer 8

@rational what is slope intercept?

Answer 9

2x + 3y = 1
y= 3x + 15

since y value is given, just plug that in the first equation

2x + 3(3x + 15) = 1

2x + 9x + 45 = 1
11x + 45 =1
11x = -44
x = -4

now plug x value,

2(-4) + 3y =1
-8 + 3y = 1
3y = 9
y = 3

Answer 10

I'm so sorry, I got the wrong answer earlier, that's why I told you to check with your book

Answer 11

The question is what is the slope intercept form of the function that contains the point (-3,2) and has a slope of -2?
y= x+

Answer 12

wait for @rational for this.. I'm not very sure

Answer 13

or @dan815

Answer 14

slope intercept form :
\[y = mx + b\]

where \(m\) = slope
\(b\) = y intercept

Answer 15

you're given slope = \(m=-2\) so
\[y = -2x+b\]

use the given point and find the value of \(b\)

Answer 16

so where does -3 and 2 come in?

Answer 17

OH I REMEMBER NOW! xD

y = mx + b, that's my next chapter's pre-cursor.. tangent to normal, curve and stuff.. lovely, @rational is gonna be spammed with questions tomorrow :P

Answer 18

ok, so would it be y=2 x + 3