Finding y-intersept form two points

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To find the y-intercept from the points (7,1) and (3,10), first calculate the slope using the formula (Y2 - Y1) / (X2 - X1), which results in a slope of -3. The y-intercept form of a line is expressed as y = mx + b, where m is the slope. To determine the y-intercept (b), substitute one of the points into the equation and solve for b. The discussion highlights the importance of correctly formatting mathematical equations and encourages users to seek help when needed. Proper understanding of slope and y-intercept calculations is crucial for success in math.
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Homework Statement


suppose you had the points (7,1) and (3,10)


Homework Equations



i know that Y2- Y1/X2 - X1 give you the slope

The Attempt at a Solution


please help this problem is killing my math grade on tests thank you
 
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Ok, you have the slope. What is it? The y-intercept form is y=m*x+b where m is the slope. To find b, put one of your points into the equation, say x=7, y=1 and solve for b.
 
This part is wrong. Do you know how to correct this:
2. Homework Equations

i know that Y2- Y1/X2 - X1 give you the slope
Either use a good mathematical typesetting system, such as Tex or TexAide, or write the formula for slope properly using grouping symbols:
(Y2 - Y1)/(X2 - X1)
 
oh... thank you i feel silly now and sry bout the incorrectness i have never posted in math/science help forums before
 

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