Posted by Anonymous on Thursday, March 15, 2007 at 8:35am.
write an equation for the line through the given points or through the given point with the given slope
For each of them, use the standard formula
(y- y1) = [(y2-y1)/x2-x1)]*(x-x1)
In the first case, that gives you
(y-7) = (1/1)* (x-5)
y = x+2
drwls, thanks for the help. I was trying to check my sons answers. He got the first one right. When he is doing this homework he is not sure of what he is doing. I showed him this and asked if he understood the standard formula and he looked like a deer in headlights! I said to make the graph and maybe that would help. Any other help. Thanks
In the "standard formula"
is the slope of the line, usually called "m".
The standard formula is just is a mathematical statement that the change in y from a point (x1,y1) is equal to the slope, multiplied by the change in x measured from the same point. Some texts may use a different approach, but I find the one that I wrote easiest to remember.
Applying the same method to the second problem,
y -2 = (6/2) (x-1)
y = 2 + 3x -3
y = 3x - 1
Answer this Question
pre-algebra - kk my teach told me to describe and draw things that are about pre...
pre-algebra - Write the equation for the given graph. 8,8,-8
Pre-algebra - How do you write an equation to determine possible values for a ...
Pre Algebra - Write an equation to find the value of X if the perimeter of a ...
Pre-calculus HELP PLASE ! - 1.Write the rectangular equation in polar form. (x...
Pre-Algebra - Write the given sentence as an equation. Tim's age in 7 years will...
Pre- Algebra - Given an equation of a line, how do I find equations for lines ...
pre-algebra 3 - One week you earned $1350. Let s represent your total sales that...
Pre Algebra - I am having a problem with slopes and intercepts problems. Write ...
pre-algebra - You are working on a polynomials problem with algebra tiles. You ...