Posted by Margie on Wednesday, October 11, 2006 at 2:57pm.
Write the equation of the line that contains the points (2, 2) and (-3, 12).
Here is part of the answer. Can you identify the missing part?
y = -2x + ___
I think it's 12
You've got the slope so use
y-y1=m(x-x1) where (x1,y1) is either point.
If you use (2,2), then y-2=-2(x-2)
I don't think it's 12, but verify this yourself.
I don't understand!Can you explain it better please?
I don't get it either!!
This is not a very good format for teaching, it's designed for helping. You both need to learn the basic formulas and concepts.
Slope is the change in y over x as you move along a line. The y intercept is where the line crosses the y-axis.
In the formula y=mx+b m is slope and b is the intercept.
If you're given a point and the slope you use the point slope form of the line which is
y-y1 = m(x-x1) where (x1,y1) is the given point and m is the slope; x and y are simply variables.
Another way to answer the question
Write the equation of the line that contains the points (2, 2) and (-3, 12).
Here is part of the answer. Can you identify the missing part?
y = -2x + ??
would be to substitute either point and solve for the ?? as
2= -2*2 + ?? or 6=?? so the intercept is 6.
oh so the answer is......y=2x+6???
I think that's it?Or am I suppposed to multiply!!
Yes, that's the correct answer. Test it to be sure.
sure
what is the answer for this (-1,-1), slope = 2
No one has answered this question yet.
Answer this Question
Related Questions
Algebra - Find the equation of the line and write your answer in the slope-...
College Calculus - Let f(x) = 3x^2 - 2x + 1 a) write an equation of the line ...
Geometry - Three points are on a coordinate plane: A(1, 5), B(-2, -4), and C(6...
algebra essentials - Find an equation for the line that contains each pair of ...
Algebra - Can someone check my answers? 1. Write the equation of the line that ...
algebra - Find the slope of any line perpendicular to the line through the ...
Math 116 - 1.Write an equation of the line containing the given points and ...
Math 116 - 1.Write an equation of the line containing the given points and ...
Algebra HELP!! - Write the equation of a line which contains the point (2,4) and...
Algebra - 1. Evaluate. (8 – 3) (12 ÷ 2 • 2) – 20 Answer: I...
For Further Reading
