Find the equation in standard form which passes through (–2, –7) and (1, –1). You must show all work.
i got -2x+7=-5
can someone help me

Question

Find the equation in standard form which passes through (–2, –7) and (1, –1). You must show all work.
i got -2x+7=-5
can someone help me

anonymous · Answer

how'd you come upon this answer?

chaise · Answer

You form should be written in:

y=mx+c

There is no y in this equation :s?

anonymous · Answer

i use the point slope formula

anonymous · Answer

point slope formula states

$$y-y_1=m(x-x_1)$$

you'll always have a y and x with a coefficient

anonymous · Answer

yah so is what i got correct

anonymous · Answer

no because your y in the equation never came out

anonymous · Answer

what did you get for your slope

anonymous · Answer

i got 2

anonymous · Answer

correct now using one of those points with m=2 you get

\[y-(-1)=2(x-1)

anonymous · Answer

$$y-(-1)=2(x-1)$$

anonymous · Answer

$$y+1=2x-2$$

anonymous · Answer

should i plug in my point (1,-1) into the y=mx +b formula to get y=2x-3 which in standard form is y-2x=-3

anonymous · Answer

mx+b is slope intercept form you can only use this if you know the y intercept

anonymous · Answer

you need to use the point slope formula

anonymous · Answer

oh okay i accidentally messed up the 2(x-1) i missed the negative and that messed me up. So the answer would be y-2x=-3

anonymous · Answer

yes

anonymous · Answer

Thank you so much!!