Slope=rise/run
yintercept is where the line crosses the y axis
y=mx+B
m=slope
b=yint
intercept at -3
y=mx-3
pick a point
(5,0)
x=5,y=0
0=m(5)-3
add 3
3=5m
divide 5
3/5=m
slope=3/5
y int=-3
x^2 − 8x + 9
What two numbers when multiplied yield 9 but when added yield -8?
There are no such numbers.
Use the quadratic formula.
Answer:
y=5/4x-11
Step-by-step explanation:
tenemos un punto (4,-6) y una pendiente equal a 5/4.
usa la ecuación y=mx+b (m es la pendiente, b es el y interceptar)
porque sabemos la pendiente es 5/4, ahora mismo la ecuación es:
y=5/4x+b
en el punto, x=4, y=-6
podemos sustituir los números en la fómula para resolver b
-6=4(5/4)+b
-6=5+b
-11=b
entonces,
la ecuación de la recta es y=5/4x-11
(¡lo siento mi español no es perfecto!)
Answer/Step-by-step explanation:
<u><em>George: </em></u>
4.3% ÷ 100 = 0.043
0.043 × 5000 = 215
<em><u>John:</u></em>
4% ÷ 100 = 0.04
0.04 × 5500 = 220
<u><em>End of 6 years:</em></u>
George: 215 × 6 = 1290
John: 220 × 6 = 1320
<u><em>John has earned the most interest at the end of 6yrs.</em></u><u><em> $1320</em></u>
You need to rise divided by the run. Another way to put it is
m = (y2 - y1)/(x2 - x1)
Take your points and plug them in
m = (2 - 9)/(-5 - 3) = (-7)/(-8) = 7/8 is the slope