Answer:
Step-by-step explanation:
<u>Standard form of quadratic function:</u>
<u>Vertex form:</u>
<u>Convert the given function by completing a square:</u>
y = x² - 8x - 3 =
x² - 2*4*x + 4² - 4² - 3 =
(x - 4)² - 19
Mutiply 1/2 to each number in parentheses. so you will get :
x+3 = -6
x = -6 - 3
x= -9
The slope intercept form is y=mx+b. m is the slope, b is the y intercept,
Step-by-step explanation:
Pythagoras theorem:
80^2+39^2 =x^2
square root of 7921 = square root of x^2
x=89
Answer:
C 5/7
Step-by-step explanation: