Slpoe intercept form in Algebra 2

You have got the slope fine.

The question is does this line pass through the point 10, -3 ?

The way you find out if this is the case is to plug in the value 10 for "x". This would be

y = (4/5)(10) -3

Does this give you -3?

If not what value for X would give you -3?

thanks...so it it doesn't equal -3 then i have to figure out what x would equal?

The equation you are using for the line is

y = Mx + B

You know M (the slope) so the problem must be with B.

You also know that this equation must be -3 when X is equal to 10.

So you can write the equation

-3 = (4/5) (10) + B

(It is very important that you understand how I got this equation. Please ask more questions if you don't get it).

... or it may help to think of B as a "Blank" (you need to find the number that goes there

-3 = (4/5)(10) + ________

What number makes this equation true?

thanks now i underrstand the answer would have to be -5

well y=mx+c
so y= -3, x= 10, c= ? , m=4/5
Therefore -3= 4/5(10) + c
c= -11,

Equation of line y= 4/5x -11
or if you prefer 4x -5y -55= 0

I've never seen the constant repressented by a B.