SOLUTION: Find an equation in slope-intercept form (where possible) for the line.y-intercept 3, x-intercept -10

Algebra ->  Linear-equations -> SOLUTION: Find an equation in slope-intercept form (where possible) for the line.y-intercept 3, x-intercept -10      Log On


   



Question 775470: Find an equation in slope-intercept form (where possible) for the line.y-intercept 3, x-intercept -10
Answer by sofiyac(983) About Me  (Show Source):
You can put this solution on YOUR website!
so basically they gave you two points where the line crosses x and y axis, y intercept means x values is 0 so(0,3) and x intercept means y value is zero so (-10,0)
now you have two points so you can find the slope using the slope formula
m=%28y2-y1%29%2F%28x2-x1%29=%280-3%29%2F%28-10-0%29=3%2F10
next you can use the formula for the line when you have a slope and a point, the formula is
y-y1=m(x-x1) where m is the slope and (x1,y1) is a point given (you can use either of the two, i'll use (0,3)
y-3=%283%2F10%29%28x-0%29
y-3=3x%2F10 now we need to put it in slope intercept form so add 3 to each side
y=3x%2F10%2B3