6. Write the equation of a line in slope intercept form that passes through the points (-2, 7) and (3, 12)

Question

anonymous · Answer

@DanJS

anonymous · Answer

@UnkleRhaukus

anonymous · Answer

@texaschic101

anonymous · Answer

@Nnesha

some.random.cool.kid · Answer

hello :}

anonymous · Answer

fan and metal to helper

some.random.cool.kid · Answer

did they give a graph if not thats ok.

zale101 · Answer

Use the slope formula
$slope=\Large\frac{y_2-y_1}{x_2-x_1}$
x1,y1= (-2, 7) 
and x2,y2=(3, 12) 
plug to find the slope

zale101 · Answer

can you do that?

zale101 · Answer

We are trying to find the slope in order to construct the equation. We don't have the slope
y=mx+b
where m is the slope and b is the y-intercept.

some.random.cool.kid · Answer

also i believe you can use the y = mx + b method to solve. am i correct zale?

some.random.cool.kid · Answer

oh nvm you said it

zale101 · Answer

Yes,but we don't have the slope yet. @highjumpcollect needs to find it :)

some.random.cool.kid · Answer

yeah ik

anonymous · Answer

ok hold on let me solve it rn

zale101 · Answer

Take your time :)

anonymous · Answer

oh wait i tried that and got 1 but i thought that was wrong

some.random.cool.kid · Answer

im in no rush im doing my own math right now too :}

anonymous · Answer

i had a toutor today to help me with this and we left off on this problem so I'm kinda forgetting how to do this

zale101 · Answer

$slope=\Large\frac{y_2-y_1}{x_2-x_1}=$$\Large\frac{12-(7)}{3-(-2)}=\Large\frac{12-7}{3+2}=$$\Large\frac{5}{5}=1$

zale101 · Answer

The slope is therefore 1 :)

anonymous · Answer

exactly what i did and got ok whats the next step i got lost there

zale101 · Answer

Now, let's plug this into the slope intercept form
y=mx+b
where m (slope) is 1
y=1x+b
to solve for the y intercept which is b in this case, we plug in (x,y) to one of the given point

zale101 · Answer

i'll choose (-2,7)

anonymous · Answer

ok

zale101 · Answer

$y=1x+b$
$(7)=1(-2)+b$
add 2 to both sides
$7+2=b$
$\Large b=9$

zale101 · Answer

y=1x+9

anonymous · Answer

omg thank u so much that makes a lot of sense could u help me with a couple more problems?

zale101 · Answer

Have you tried solving them? Use the same procedure i did above and you'll do well...

anonymous · Answer

yes i did but it made no sense...

zale101 · Answer

let me see what you did :)

anonymous · Answer

the problem is just like this one but i got 0 as my slope.. this one i did with my touter and idk what he was saying

anonymous · Answer

this is the problem -  Write the equation of a line in slope intercept form that passes through (2, 4) and (5, 4).

anonymous · Answer

i did the |dw:1419910086938:dw|