Algebra HELP!!
posted by Margie .
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
yy1=m(xx1) where (x1,y1) is either point.
If you use (2,2), then y2=2(x2)
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 yaxis.
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
yy1 = m(xx1) 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
Respond to this Question
Similar Questions

College Algebra
These are the points on the graph! O year = $41000 1 year = $43000 2 year = $46000 3 year = $48500 The following graph shows Bobâ€™s salary from the year 2002 to the year 2005. He was hired in the year 2002; therefore t = 0 represents … 
math
Solve the following algebraically. Trial and error is not an appropriate method of solution. You must show all of your work and write answers in rational form. 3 x + 7 = 9 Answer: x = 2/3 Show your work here: 3 x + 7 = 9 7  7 3/3 … 
College Calculus
Let f(x) = 3x^2  2x + 1 a) write an equation of the line going through the points (1, f(1)), and (2, f(2)). b) Find a point on the graph of f where the tangent line to the graph has the same slope as the line in part (a). Write the … 
chemistry
Write a balanced equation for the neutralization of each of the following. Express your answer as a chemical equation. Identify all of the phases in your answer. Part A: H3PO4(aq) and NaOH(aq) Part B: Hl(aq) and LiOH(aq) Part C: HNO3(aq) … 
MathAlgebra 1
Part 1: When writing linear equations, how do you determine which form of a line to use? 
Calc
Let f be the function that contains the point (1,8) and satisfies the differential equation dy/dx=10/(x^2+1) (a) Write the equation of the tangent to f at x=1. (b) Use your equation in part a to estimate f(0). (c) We know that the … 
algebra
Part A: Darla rented a room for 3 days at $285.00 per day. If she rents the same room for 6 days, it would cost $510. Write an equation in the standard form to represent the total rent (y) that Darla has to pay for renting the room … 
math
Part A: Max rented a motorbike at $465 for 5 days. If he rents the same motorbike for a week, he has to pay a total rent of $625. Write an equation in the standard form to represent the total rent (y) that Max has to pay for renting … 
Algebra 1 Urgent
Part A: Sam rented a boat at $225 for 2 days. If he rents the same boat for 5 days, he has to pay a total rent of $480. Write an equation in the standard form to represent the total rent (y) that Sam has to pay for renting the boat … 
ALGEBRA HELP #3
The graph shows the functions f(x), p(x), and g(x): Graph of function g of x is y is equal to 1 plus the quantity 1.5 raised to the power of x. The straight line f of x joins ordered pairs negative 5, 3 and negative 3, negative 1 and …