Sunday

November 23, 2014

November 23, 2014

Posted by **Emmy** on Tuesday, October 23, 2012 at 11:14am.

Write the slope-intercept form of an equation of the line that passes through the given point and is parallel to the graph of each equation

13. (2,-7) y= x-2

i know that 2 and -7 is the slope to the line that i have to get the new line to be parallel to it.... if that makes sence... but please help!!!

- Algebra -
**Reiny**, Tuesday, October 23, 2012 at 11:23amin the y-intercept slope form

y = mx + b

the slope is m and the y-intercept is b

(2, -7) is a**point**and tells you nothing about the slope.

so the given line is y = x-2

or y = 1x - 2, so you know the slope must be 1, since the two lines are to be parallel

and the new line must look like

y = 1x + b, where only the y-intercept or the b would have changed

Now we plug in our new point (2,-7)

-7 = 1(2) + b

b = -9

your new equation parallel to the old one is

y = x - 9

- Algebra -
**Emmy**, Tuesday, October 23, 2012 at 11:32amohhhhhh now i see ok can i do one and could you tell me if im right??

- Algebra -
**Reiny**, Tuesday, October 23, 2012 at 11:39amwill be here for another 15 minutes

- Algebra -
**Emmy**, Tuesday, October 23, 2012 at 11:44am(2,-1) y=2x+2

--------------

y=2x+b

-1=2(2)+b

-1=4+-5

--------------

y=2x-5 <--- is this right?

- Algebra -
**Steve**, Tuesday, October 23, 2012 at 11:56amyep. to check, just plug in (2,-1) and see whether it satisfies the equation. Since 2(2)-5 = -1, you're right on.

- Algebra -
**emmy**, Tuesday, October 23, 2012 at 12:04pmthank you sooooo much!!!!

**Answer this Question**

**Related Questions**

My Daughter Stacy needs help in math plz help! - You have to find the x and y ...

Pre Algebra - I am having a problem with slopes and intercepts problems. Write ...

Math - How do you write equations for perpendicular lines? I will assume you ...

Algebra.. - HELP. Problems 4 - 7: Write an equation for the line in point/slope ...

Slopes - Given y = 2x – 4, choose the statement that accurately describes this ...

math,help plz - i am lost with this one. Solve the system by graphing. what is ...

Algebra - I know that standard form is Ax+By=C, but I'm not really sure how to ...

math - i have more than one question so if u no any of the answers please tell ...

algebra[please check] - in questions 1 and 2, write an equation of the line in ...

MATH - Please help me!!!!!!!!!!!!!!!1 Instructions a. If needed, rewrite the ...