SOLUTION: I need to write an equation and graph for both of these problems and I have no clue how to do them. Could you please help me. A. slope =2 y intercept = 4 B. m = -3 ( 0,3)

Algebra ->  Graphs -> SOLUTION: I need to write an equation and graph for both of these problems and I have no clue how to do them. Could you please help me. A. slope =2 y intercept = 4 B. m = -3 ( 0,3)       Log On


   

Question 189827: I need to write an equation and graph for both of these problems and I have no clue how to do them. Could you please help me.
A. slope =2 y intercept = 4
B. m = -3 ( 0,3)
Thank you!
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


* For the first one, you need the slope-intercept form of the equation of a line:



where m is the given slope and b is the given y-intercept.

Simply make the indicated substitutions and you are done.

* For the second one, you need the point-slope form:



Where are the coordinates of the given point and m is the given slope. Again, just make the indicated substitutions, though in this case you should re-arrange the result into slope-intercept form.

* In order to graph your equations, use the following procedure once for each equation:

Step 1. Pick a value for x. It can be anything you like, but 0, 1, or some other small integer usually works well and makes the arithmetic easier.

Step 2. Substitute that value in place of x in your equation. Do the arithmetic and determine the value of y that results.

Step 3. Take the value of x that you selected for step 1 and the value of y that you calculated in step 2 and form an ordered pair (x,y).

Step 4. Plot the ordered pair from Step 3 on your graph. Remember that the x value is the distance right or left along the horizontal axis and the y value is the distance up or down along the vertical axis.

Step 5. Repeat steps 1 through 4 with a different value for x.

Step 6. Draw a line across your graph that passes through the two points that you plotted.

John