Monday

October 20, 2014

October 20, 2014

Posted by **Margie** on Wednesday, October 11, 2006 at 2:57pm.

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

**Answer this Question**

**Related Questions**

College Calculus - Let f(x) = 3x^2 - 2x + 1 a) write an equation of the line ...

chemistry - Write a balanced equation for the neutralization of each of the ...

Math-Algebra 1 - Part 1: When writing linear equations, how do you determine ...

Calc - Let f be the function that contains the point (-1,8) and satisfies the ...

Math - Part 1: When writing linear equations, how do you determine which form of...

math (please help) - 1. Write the equation for the horizontal line that contains...

math - Solve the following algebraically. Trial and error is not an appropriate ...

chemistry - Complete and balance the equations for each of the following ...

calculus - a) If x3 + y3 - xy2 = 5, find dy/dx. (b) Using your answer to part (a...

ALG 2 PLZ PLZ HELP - As you can see, the biker and his friend are having a hard ...