Posted by Momo on Saturday, February 6, 2010 at 6:46pm.
Graph the solution:
This is my thought process in this:
The first equation I can solve for y since we don't have to worry what x is. And I get y>3x-7.
The second one, however, y is being multiplied by 5, so I can't just divide by 5 on both sides because I don't know if the value of y will be positive or negative (and then I'll have to switch the sign).
...So I don't know about the second equation. Help please?
Math - Damon, Saturday, February 6, 2010 at 6:52pm
5 y > -x -3
y > -x/5 -3/5
You divided by a positive number, so there is no reason to reverse the direction of the arrow. Now graph that line and shade above it.
Math - Reiny, Saturday, February 6, 2010 at 6:55pm
5y ≥ -x - 3
but you are dividing by 5, so you don't have to worry about the inequality sign.
y ≥ -x/5 - 3/5
Now in each case, the equation becomes the boundary.
So for the first one, draw a dotted line, and shade in everything above that line.
For the second, draw a dotted line and shade in everything above that line.
Answer This Question
More Related Questions
- math - Can someone help me figure this out. The difference of two numbers is 80...
- Geometry&trigonometry - consider the polar graph §æ =(2/3)¦Ð. (¦Ð=pie) find the ...
- compound inequality - olve. State the solution set using interval notation and ...
- How do I do this.?(Math.) - Use the Substitution method to solve the system of ...
- MATH - Useing substitution/elimination method what is the solution set to x^2+y^...
- math - how would you solve for y in this problem: x=(y^2+3y)^(1/3) I got: y= x^3...
- Math - 1)Solve 3+2(1-x)>6 or 2x+14<=8. Graph the solution set on a number ...
- Algebra 1 - What is an equation of a line perpendicular to the line with ...
- Algebra - Solve the conjunction -2<or=a+3<8 Here is my result :5<or = a...
- Algebra - I have a few questions that I need help with. Solve the radical ...