Answer:
Step-by-step explanation:
If we plot both the vertex and the directrix, we see that the parabola opens to the right. We know this because of the fact that the directrix is a vertical line. Because the vertex is to the right of the directrix and a parabola always opens away from the directrix, we know this is of the form
h and k are the coordinates of the vertex which we are given. Our h = 10 and our k = 0. P is defined as the distance between the vertex and the directrix, so our p = 2. Filling in the equation with all of that gives us
and
and
so
Not sure what form you need it in, work form or standard form.
Answer:
Step-by-step explanation:
Use the distributive property.
Answer:
Y=60
Step-by-step explanation:
S+Y=90
S=(2*Y)-90
Y+2Y-90=90
3Y=180
Y=60
Plug back into S+Y=90
S+60=90
S=30
To put this into slope-intercept form (y=mx+b), you need to solve the equation for y.
4x + 7y = 14
First move the 4x to the right by subtraction.
Then isolate the y by dividing everything on both sides by 7. Be sure to divide **everything** by 7.
Answer:
c
Step-by-step explanation:
if it is on sale for 40 percent off, then it would be 60 percent of the original price. 18/6=3. 3*4=12. 3*6=18. 12 + 18 = 30