Answer:
Step-by-step explanation:
Y-intercept:
(8,0) ; x₁ = 8 & y₁ = 0
(3,7) ; x₂= 3 & y₂ = 7
- First find the slope of the line.
slope y-intercept form of the line: y = mx + b
Substitute the slope and x and y in the above equation. We can choose anyone of the given points.
I hope this helps you
slope=m
(-3,4) x'=-3 y'=4
(4,-1) x"=4 y"=-1
slope formula :
m. (x'-x")=y'-y"
m. (-3-4)=4-(-1)
m.-7=4+1
m=-5/7
300+5+20 COULD BE ONE WAY
(-2,15)(9,-18)
slope = (-18 - 15) / (9 - (-2) = -33/11 = -3
There can be 2 answers to this question....
point slope form : y - y1 = m(x - x1)
(1) using points (-2,15)...
y - 15 = -3(x + 2) <== one possible answer
(2) using points (9,-18)
y + 18 = -3(x - 9) <== another possible answer
Simple....
you have:
(-15,70) and (5,10)
Using-->>
Using y=mx+b...and any of the coordinates....
70= -3(-15)+b
70=45+b
70=45+b
-45 -45
25=b
y=-3x+25
Thus,your answer.
