Question

Please help me..... =*(




Line A has slope of -5/3 and passes through the point (-2,7). What is the x-intercept of line A?

Answer 1

First, use the given infiltration to construct the equation of line A, then set y equals to zero and solve for x. The x's that you solved for are the x-intercepts.

Answer 2

You can use the point slope formula and plug all the given info in. Do you remember the point slope formula?

Answer 3

I have a problem understanding where to put the numbers... In what cases do you replace it for Y and in what cases do u replace it for b?

Answer 4

y=mx+b

Answer 5

\(\Large y-y_1=m(x-x_1)\)
Where x1,y1 is the given point
and m is the slope

Answer 6

That is the point slope formula ^^

Answer 7

is there any way to solve the problem without the point slope formula? because the solution doesnt use it

Answer 8

Or you can use y=mx+b

Plug x,y by the given point
and m for the slope
Then solve for b
After solving for b, you then go back and write y=mx+b again and plug in the y-intercept (b) and slope. Then, you have the equation solved.

Answer 9

yea thats what i have a problem understanding... in what case do you use it for b and in what case do you use it for Y???????????

Answer 10

All the matters is to construct the equation of line A so you can set y to zero and solve for the x-intercept. There's two ways you can do it.

Answer 11

i really need to understand that for future problems

Answer 12

Yes, i understand.