Homework Help: 8th grade

Posted by Monkeylover:) on Thursday, November 4, 2010 at 7:33pm.

Consider the equation 3x+5y=k, what values could k so that the x-intercept and y- intercept on teh equations graph would both be integers. explain.

8th grade - SraJMcGin, Friday, November 5, 2010 at 3:04am
If this is algebra, for example, please label the School Subject correctly. Otherwise the correct teacher may never read your post.

Sra
8th grade - Henry, Friday, November 5, 2010 at 11:57pm
3X + 5Y = K.

k = A * B = 3 * 5 = 15.
3 and 5 are now factors of 15.
Therefore, 15 is divisible by both:

3X + 5Y = 15,
Let X = 0,
3*0 + 5Y = 15,
5Y = 15,
Y = 3 = Y-Int.

Let Y = 0,
3X + 5*0 = 15,
3X = 15,
X = 5 = X-Int.

Graph: (0 , 3) , (5 , 0).

Answer this Question

Related Questions

math - if 3x+5y=k than what values could k have so that the x intercept and y ...
MATH - Please help me!!!!!!!!!!!!!!!1 Instructions a. If needed, rewrite the ...
Math 8th Grade - I would greatly appreciate it if someone would please be kind ...
algebra - -5x + 5y=25 -10x+5y=10 Graph the linear equation by writing both ...
algbra - Graph the following equations; calculate the slope, x-intercept, and y-...
Math: Linear Equations - What is "3x=9" in y=mx+b form, and what is ...
Math: Linear Equations - What is "3x=9" in y=mx+b form, and what is ...
ALgebra 1 - 4. Write the equation of a line whose slope is 6 and whose y ...
Math - Did I do this correctly: Equation of a line: y=1/3x+5 Finding x-intercept...
Algebra - Write a slope-intercept equation of the line whose graph is desrcibed,...

For Further Reading

First Name:
School Subject:
Answer: