
Equations of Lines
I solved the answers for the following. Although, I do not know exactly how to grasp the concept of the xintercept? I don't know what xintercept is.
The equation $\displaystyle 6x+8y+9=0$ has the xintercept of ___ and the yintercept of ___. It defines the straight line of ___.
My answers are:
xintercept =
yintercept = 9/8
Straight Line of Slope = 3/4.
The equation $\displaystyle 4.5x+7.3y+2.1=0$ has the xintercept of ___ and the yintercept of ___. It defines the straight line of ___.
My answers are:
xintercept =
yintercept = 21/73
The Slope is = 45/73
The equation $\displaystyle 5.2x+7.4y5.6=0 $ has the xintercept of ___ and the yintercept of ___. It defines the straight line of ___.
My answers are:
xintercept =
yintercept = 28/37
The Slope is = 26/37

Re: Equations of Lines
Why haven't you found the x intercepts? Do you know that xintercepts occur when y = 0?

Re: Equations of Lines
Prove It is correct. The xintercept is simply where y=0.
Or, think of it this way... the xintercept is where that line passes through (or intercepts) the xaxis. At that point, y must be zero.
The yintercept works pretty much the same way. It's the point where the line passes through (or intercepts) the yaxis. And at that point, x must be zero.
Finding either intercept then just becomes a matter of knowing what is zero and setting that value to zero in the equation.